Box-n-Go Storage Container Sizes, Weight Limits & Loading

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Box-n-Go offers two paths to choose from. Pick a fixed size — S, M, L, or XL — if you know your load and want to commit to one container. Pick Box-n-Go Flex if you’d rather not guess: order Flex containers, load what you actually have, pay only for the ones you use. Flex is not the smallest in a ranked lineup — it’s the modular alternative to every fixed size. Anything you’d do with an S, M, L, or XL you can do with Flex containers instead, often better. All sizes are weatherproof, secure with a padlock you control, and load at ground level. All five sizes are available for on-site storage at your address. Box-n-Go Flex, S, M, and L are also available for facility storage at our indoor location and for local moving across Southern California. Box-n-Go Flex is also available for long-distance moving.

Box-n-Go Flex (8′ × 5′) – Order as Many Units As You Want – Pay Only For What You Use

Exterior: 8′ L × 5′ W × 7′ H

Interior: 93″ L × 57″ W × 78″ H

Max contents weight: 2,000 lbs

Capacity: 1 to 1.5 rooms, furniture, appliances, belongings

Uses: facility storage, on-site storage, local moving, long-distance moving

Box-n-Go Flex is the modular alternative to every fixed size. Anything you’d do with a fixed-size container (S, M, L, or XL) you can do with Flex containers instead. The difference: you don’t commit to one size up front. Order one, two, three, or four Flex containers in a single delivery; load what you actually have; pay only for the ones you use. Unused containers go back on the return trip at no charge. Match your real load instead of guessing.

Five reasons customers choose Flex:

1. Pay only for the space you use. If you’re unsure whether a larger container is too much, order Flex containers — whatever many you’re confident about, plus one as backup. Use the backup if you need it; send it back empty if you don’t need it. This way you never pay for the space you do not use.

2. Placement flexibility — designed for tight spaces. A 20-foot XL needs a 20-foot run of contiguous space on your property. An L needs 16 feet. For urban lots, shared driveways, or tight side yards, a single large container may simply not fit. Multiple Flex containers solve this — each one needs only a 5-foot run, and they can be placed in separate locations: one in the driveway, one in the side yard, one in the back. Same total capacity, very different placement requirements.

3. Sort and segregate by room or category. One large container means everything gets mixed together — garage tools next to bedroom furniture next to kitchen boxes. Multiple Flex containers let you separate the load: garage in one, bedrooms in another, living and dining in the third. Cleaner loading, cleaner unloading at destination, no rummaging through a mixed pile to find one specific box.

4. Easier mid-storage access. When you store a container for several months and need to retrieve one item, it’s always at the back, behind everything else. With one large container, that means unloading half the contents to reach it. With sorted Flex containers, you open the right one and find what you need without disturbing the rest.

5. The only size for long-distance moving. Box-n-Go Flex is the only container size we transport on long-distance moves. The smaller footprint and stackable design make Flex the right unit for cross-region transport. If you’re relocating beyond the local Southern California service area, Flex is the size you’ll use.

Availability. Box-n-Go Flex inventory runs consistently deep — Flex is the size we stock most heavily because it’s the choice that doesn’t require guessing. Our fixed sizes (S, M, L, XL) have more limited inventory and can sell out during high-demand periods like the May-through-August moving season. If you want a fixed size on a specific date, book early. If you want flexibility on date and load, Flex is almost always available.

Box-n-Go S (8′ × 8′)

Exterior: 8′ L × 8′ W × 8.5′ H

Interior: 90″ L × 90″ W × 83.5″ H

Max contents weight: 8,000 lbs

Capacity: studio to small one-bedroom

Uses: facility storage, on-site storage, local moving

Box-n-Go S works for facility storage at our location, on-site storage at your address, and local moves across Southern California. The 8′ × 8′ footprint is the smallest of our standard sizes — bigger than Flex, smaller than M — and fits a studio or small one-bedroom load.

Box-n-Go M (12′ × 8′)

Exterior: 12′ L × 8′ W × 8.5′ H

Interior: 141″ L × 90″ W × 83.5″ H

Max contents weight: 7,650 lbs

Capacity: 1- to 2-bedroom apartment

Uses: facility storage, on-site storage, local moving

Box-n-Go M works for facility storage at our location, on-site storage at your address, and local moves across Southern California. The 12′ length gives you the next step up from S — typically the right size for a 1- to 2-bedroom apartment with furniture and appliances.

Box-n-Go L (16′ × 8′)

Exterior: 16′ L × 8′ W × 8.5′ H

Interior: 189″ L × 90″ W × 83.5″ H

Max contents weight: 7,300 lbs

Capacity: 2- to 3-bedroom apartment or small home

Uses: facility storage, on-site storage, local moving

Box-n-Go XL (20′ × 8′)

Exterior: 20′ L × 8′ W × 8.5′ H

Interior: 231″ L × 90″ W × 83.5″ H

Max contents weight: 10,000 lbs

Capacity: 3-bedroom home or larger

Uses: on-site storage

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Contents Weight Limits

Every container size has a maximum weight of contents. Most household loads are volume-limited — you’ll fill the container before reaching the weight cap. When storing heavy items only and no appreciable furniture pieces (files, books, tools), load to about 2/3 height so not to exceed the weight limit.

Box-n-Go Flex (2,000 lbs). The Flex limit is the standard industry cap for transported portable storage. A typical Flex load — furniture, mattresses, boxes — fills the container by volume before reaching 2,000 lbs. Dense loads reach the limit faster.

Box-n-Go S (8,000 lbs). The S limit comfortably handles a studio or small one-bedroom load with normal household goods. Volume runs out before weight for nearly every typical use case.

Box-n-Go M (7,650 lbs). The M limit covers a 1- to 2-bedroom apartment with furniture and appliances. Volume is again the binding constraint for most loads; only unusually dense contents approach the cap.

Box-n-Go L (7,300 lbs). The L limit handles a 2- to 3-bedroom apartment or small home. The larger interior volume means you’ll fill the space before approaching the weight limit on standard household contents.

Box-n-Go XL (10,000 lbs). The XL is on-site only — never transported, never lifted. The 10,000-lb limit reflects what the container itself is built to hold. The XL accommodates a 3-bedroom home’s contents with significant weight headroom.

A La Carte Weight Rule — 50 lbs per Item

A La Carte student storage works differently from container storage. Items are handled individually by our crew — picked up, transported to our indoor facility, and stored item-by-item. Because of the hand-handling, A La Carte has a per-item weight limit: no single box or small item may exceed 50 lbs.

This rule applies to every box, bag, bin, or piece of furniture in an A La Carte booking. Use small or medium boxes for dense items (books, files), distribute heavy contents across multiple boxes, and avoid over-packing. Items over 50 lbs cannot be accepted as A La Carte — container storage is the right path for those.

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A few hours of prep before delivery day saves time on the load itself and protects your belongings during storage and transport. The basics: pick a good spot, gather your supplies, have a padlock ready, and set up your inventory list.

Location and Clearance

Before the container arrives, decide where it will sit. Check with your HOA, property manager, or local authorities to confirm you’re complying with any covenants, guidelines, or zoning restrictions for container placement. The delivery vehicle needs clearance to reach the placement spot. Check for low-hanging branches, overhead wires, narrow gates, parked cars, and tight turns between the street and the placement location. Containers themselves require 8.5′ height and 8.5′ width minimal clearance for placement.

Packing Supplies

Have your supplies ready before the container arrives. The basics:

• Boxes — small for heavy items (books, files, tools), large for light items (pillows, bedding, lampshades).
• Packing paper, bubble wrap, and moving blankets — for fragile items and gap-filling.
• Tape — heavy-duty packing tape for sealing boxes.
• Markers — for labeling boxes by room and contents.
• Rope, ratchet straps, or moving bands — for tying tall items to the interior tie-down rings.
• Cardboard, blankets, or plastic sheeting — for protecting the container floor before loading.
• A doorstop or heavy object — for propping the container doors open during loading.

Box-n-Go sells packing supplies and can deliver them with your container — let us know when you order. Supplies are also available on-site at our facility during business hours if you need to top up mid-load.

Padlock

The container must be locked when unattended and when loading is complete. Box-n-Go sells high-security laminated steel padlocks and can deliver one with your container at the time of delivery — let us know when you order. You can also use your own padlock if you prefer. We recommend a 1½” minimum size, laminated steel, high-quality commercial grade. The padlock is yours; the key is yours; we do not have copies.

Inventory List

Our Inventory List Form is a printable PDF that tracks contents box-by-box, declared value per item, and a layout grid showing what’s where in the container. Note the container number on each form. If you’re using multiple containers, one form per container. Most customers skip this step and regret it months later — when something is missing or when they need to find one specific box mid-storage. The few minutes of writing during loading pays back many times over. Note: the inventory form’s 2,000-lb warning reflects the original Box-n-Go Flex weight cap. Your size’s actual contents weight limit is in the Contents Weight Limits table above.

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A well-loaded container protects your belongings during storage and transport. The container does not move much during indoor facility storage, but on transport days the load shifts, vibrates, and shifts again. Items packed loosely or stacked badly arrive damaged. The rules below cover what works.

1. Plan the layout before you start loading. Walk through what’s going into the container and roughly where it will sit. Heaviest items get the floor; tall items go against walls; light items fill in around them. A few minutes of planning saves an hour of repacking.
2. Prop the doors open while loading. Container doors swing in wind and can slam unexpectedly. Use a doorstop, a heavy item, or the door retainer if your container has one. A swinging door pinches fingers, bangs shut on you halfway in, or damages contents being loaded.
3. Distribute weight evenly across the floor. Spread heavy items across the full footprint of the container. Build the load to keep weight balanced front-to-back and side-to-side.
4. Load heaviest items first, on the bottom and toward the center. Bureaus, dressers, china cabinets, sofas, refrigerators, washers, large appliances. Build a stable base. Center-of-gravity stays low and centered, which is what you want when the container is lifted or driven.
5. Break down furniture where possible. Remove table legs, disassemble bed frames, take apart anything that comes apart. Disassembled furniture stacks flatter and packs tighter than assembled pieces, and saves significant floor space.
6. Stand mattresses on end against the wall, propped straight. Mattresses take less floor space upright than laid flat. Prop them so they stand fully vertical — a leaning mattress bends out of shape over time and becomes lumpy. The same applies to sofas or loveseats stood on their sides.
7. Use full boxes, not partial ones. A half-empty box collapses under weight stacked on top. Fill every box to the top — use packing paper, towels, or soft items to fill voids. Close every lid. Stacked full boxes share load. Stacked partial boxes crush.
8. Use small boxes for heavy items, large boxes for light items. Books, files, and tools go in small boxes — easier to lift, less likely to break the box. Pillows, bedding, and lampshades go in large boxes. Stack lighter boxes on top of heavier ones.
9. Place lighter items and soft goods on top. Pillows, bedding, lampshades, cushions, bagged stuffed animals. Load these last and on top of heavier boxes. They fill irregular spaces between rigid items and protect what’s under them.
10. Pack tight and fill gaps. Empty space between items lets the load shift. Wedge soft goods (blankets, pillows, clothing in trash bags) into gaps between furniture and boxes. A tightly packed container behaves better than a half-empty one. Be generous with blankets, paper, and cardboard for filling voids.
11. Tie tall items to the interior tie-down rings. Each container has tie-down rings mounted on the interior walls. Use rope, ratchet straps, or moving bands to secure mattresses on edge, mirrors, framed art, headboards, tabletops, and any tall furniture. Items that aren’t tied off lean, fall, and damage what’s around them during transport.
12. Load by sections, securing each section. Pack the back quarter of the container floor-to-ceiling, secure with rope or strap to the tie-down rings, then move to the next quarter. Sectioning prevents the entire load from shifting if one item works loose during transport.
13. Wrap fragile items individually. Bubble wrap, packing paper, or moving pads around each fragile piece. Fragile items can be packed inside dresser drawers as additional padding and space optimization. Use special mirror cartons for mirrors and framed art, stored on end.
14. Label boxes by room and contents on multiple sides. Write the room and a short content list on at least two sides of every box. Two reasons: at destination, boxes go directly to the right room. Mid-storage, if you need to access something, labels let you find it without opening every box.
15. Store frequently-needed items at the front. If you’re storing multiple containers or expect to access items mid-storage, load the items you’ll need most often in one specific container and toward the door side. Saves digging through everything to find one box.

For room-by-room packing techniques and item-specific tips (how to pack a kitchen, fragile glassware, electronics, lamps, and more), see our Box-n-Go CARE: Education resources.

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For your safety and the safety of others, and to protect your belongings during storage and transport, avoid the following:

• DO NOT overload the container. Each size has a maximum contents weight — exceeding it is a safety hazard. Overloaded containers can cause equipment to overturn during lifting, and Box-n-Go may refuse pickup if the load exceeds the limit. See Contents Weight Limits above for the cap on your size.
• DO NOT pile all heavy items on one side. Uneven weight distribution stresses the container and causes the load to shift during transport. Spread heavy items across the full footprint, centered low.
• DO NOT leave loose items unsecured. Anything not strapped, padded, or tightly packed will shift during transport. Use moving blankets, rope, and the interior tie-down rings to secure tall and irregular items.
• DO NOT use heavy plastic to cover furniture. Heavy plastic traps moisture and causes mildew on fabric and upholstery over time. Use moving blankets or thin breathable plastic made specifically for storage.
• DO NOT remove the weather-resistant cover from your container. The cover protects contents from rain and weather during transport and on-site storage. Removing it exposes your belongings.
• DO NOT let children or pets play in, on, or around the container. Loading days bring falling boxes, tipping furniture, moving doors, and crew on foot. Children climbing on contents or playing near the container are at real risk. Set a clear boundary before loading starts.
• DO NOT store items of high value inside the container. Antiques, fine art, jewelry, valuable documents, irreplaceable items, and items of high emotional value belong with you — not in storage. See Prohibited Items below for the full list of items not suited to container storage.
• DO NOT store prohibited items. Hazardous materials, flammables, perishables, firearms, and other restricted categories cannot be stored in Box-n-Go containers. The full list is in Prohibited Items below and on the Service Policies page.

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Prohibited Items

For your safety and the safety of others, certain items cannot be stored in Box-n-Go containers. These categories cover hazardous materials, perishables, restricted goods, and items that are not suitable for storage handling. The most commonly-asked categories:

• Flammable liquids and aerosols — gasoline, propane tanks (full or empty), aerosol cans, lighter fluid, paint thinner, oil-based paints, lacquers.
• Perishable food and agricultural goods — fresh or frozen food, plants, anything that can spoil. Pests follow food into storage.
• Living or dead organisms — plants, pets, anything that needs air, water, or temperature control.
• Hazardous and toxic materials — chemicals, pesticides, fumigants, radioactive materials, explosives, ammunition, fireworks.
• Firearms — guns, ammunition, gunpowder.
• High-value items — jewelry, fine art, antiques, valuable documents, deeds, stocks, currency, irreplaceable heirlooms. Keep these with you.
• Medications and pharmaceuticals — controlled substances, prescription drugs, anything requiring temperature stability.
• Items damaged by temperature or humidity — anything that can’t tolerate the temperature range of unconditioned indoor or outdoor storage.

This is a summary. For the complete list of prohibited items and the full terms governing storage of restricted goods, see our Service Policies — Prohibited Items. Items stored in violation of these rules may result in additional charges, removal at the customer’s expense, and may void coverage under the Service Agreement.

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What are the contents weight limits for each container size?

Box-n-Go Flex is 2,000 lbs. Box-n-Go S is 8,000 lbs. Box-n-Go M is 7,650 lbs. Box-n-Go L is 7,300 lbs. Box-n-Go XL is 10,000 lbs. Most household loads stay well under these caps — volume runs out before weight. Dense loads (files, books, tools) can hit the cap before the container is full; load to about 2/3 height for those. See the Contents Weight Limits section above for the full table.

How do I pick the right size?

Two paths. Pick a fixed size — Box-n-Go S, M, L, or XL — if you know your load and want to commit to one container. Pick Box-n-Go Flex if you’d rather not guess: order Flex containers (up to four per delivery at one flat rate), load what you actually have, send back what you don’t use, and pay only for the ones you load. Box-n-Go Flex is not a smaller version of the other sizes — it’s the modular alternative to every fixed size. Anything you’d do with an S, M, L, or XL you can do with Flex containers instead, often better: no over-paying for empty space, no risk of running out of room. See the Container Sizes section above for the full lineup.

Can I order multiple Box-n-Go Flex containers in one delivery?

Yes. Box-n-Go Flex is the only size that can be delivered up to four at once for a single flat delivery rate. You pay only for the containers you actually load — unused Flex units go back on the return trip at no charge. This makes Flex the modular alternative when you’re between sizes, when your contents need to be sorted across multiple containers, or when other sizes are sold out for your delivery date.

What happens if I overload the container?

Box-n-Go may refuse pickup if your container exceeds the contents weight limit. Overloading is a safety hazard — lifting equipment can overturn, the container can fail under load, and the load is at risk of shifting violently during transport. If you’re close to the limit, distribute the load more evenly or remove the heaviest items before pickup.

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Do I need to provide my own padlock?

You can use your own padlock or buy one from Box-n-Go. We sell high-security laminated steel padlocks and can deliver one with your container at the time of delivery — just let us know when you order. If you bring your own, we recommend a 1½” minimum size, laminated steel, high-quality commercial grade. The padlock is yours and the key is yours; we do not keep copies.

What can’t I store inside a Box-n-Go container?

Hazardous materials (flammables, aerosols, propane, chemicals), perishables (food, plants, anything that can spoil), firearms and ammunition, high-value items (jewelry, fine art, documents, irreplaceable items), pharmaceuticals, and anything damaged by temperature or humidity. See the Prohibited Items section above for the summary and our Service Policies for the complete list.

What’s the difference between facility storage and on-site storage?

On-site storage means the container stays at your address — delivered, loaded, parked at your property until you’re ready to unload. All five Box-n-Go sizes work for on-site storage. Facility storage means the container goes back to our indoor facility after loading and is held there until you schedule its return. Box-n-Go Flex, S, M, and L are available for facility storage; Box-n-Go XL is on-site only because the 20-foot length exceeds what we transport. For full details on facility storage access and procedures, see our Access page.

Where is the Box-n-Go facility located?

Our facility is centrally located in the greater Los Angeles area, serving Los Angeles, Orange, Ventura, San Bernardino, and Riverside counties. Address and driving directions are on the map below. Call 877-269-6461 when you arrive and we’ll meet you in the access area.

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For account questions, size selection help, or to schedule delivery, call 877-269-6461 or sign in to My Account. For access procedures including redelivery and facility access appointments, see our Access page. For service policies including the complete prohibited items list, cancellation rules, and payment terms, see our Service Policies page. For room-by-room packing techniques and item-specific tips, see our Box-n-Go CARE: Education resources. For everything else operational, our FAQ has the rest.