Best Large Storage Units
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Large storage units are wide, tall shelving systems that hold bins, tools, pantry goods and seasonal items in a garage, basement or utility room. The right unit depends on the room, the weight you will put on each shelf and whether you need open metal or closed plastic. The six listings in this guide include two heavy-duty steel units that are 71 and 79 inches wide, a 57-inch plastic shelving rack rated at 50 pounds per shelf, and a 16-cube system that the listing says holds 11 pounds per cube. Each entry gives the size and load stated in its listing, and where a figure is missing, the guide says so.
Quick answer
- For the highest stated load, the 79-inch steel unit lists 7,000 pounds and four shelves.
- For a 71-inch steel unit with a 5,000-pound limit, the Garage Shelving listing gives four adjustable shelves and a 24-inch depth.
- For closed plastic shelves with a 50-pound limit each, the Sterilite four-shelf unit measures 57 inches tall and 34.5 inches wide.
- For a cube system that can be arranged in many layouts, the C&AHOME 16-cube unit lists 11 pounds per cube.
How to choose a large storage unit
Start with the load. Large steel shelving can hold thousands of pounds in total, but the listings do not always say how much each shelf can take. The 71-inch steel unit lists 5,000 pounds, and the 79-inch unit lists 7,000 pounds. The Sterilite plastic unit lists 50 pounds on each of its four shelves and 200 pounds for the unit. The cube system lists 11 pounds per cube, which makes it a light-duty choice.
Next, measure the room. A large unit needs floor space, and it also needs the path to be clear enough to load it. The steel units are 24 inches deep, and the Sterilite unit is 14.38 inches deep. Check the ceiling height before you buy, because the tallest unit here is 79 inches high and needs room to stand upright.
Sizing and fit
The sizes differ. The 71-inch steel unit measures 71.3 inches wide, 24 inches deep and 70 inches high. The 79-inch unit measures 79 inches wide, 24 inches deep and 79 inches high. The Sterilite unit is 34.5 inches wide, 14.38 inches deep and 57 inches high. The C&AHOME cube system is 48.4 inches high, 48.4 inches long and 12.4 inches deep when assembled as a 16-cube set. The steel units both need a minimum door width of about 71 to 79 inches for delivery, according to their specs, so check the path into the garage or basement before you order.
Materials and build
The steel units use powder-coated metal in black, with one-piece uprights and diagonal braces. The listing for the 79-inch unit gives a steel thickness of at least 0.8 millimeters. The listing for the 71-inch unit describes lateral bars and locking pins that keep the shelves in place. The Sterilite unit is plastic with tubular frame supports and solid shelves that the listing describes as resistant to denting and rust. The C&AHOME cubes are PP plastic with an ABS connector and metal frame in white or black. Steel is the choice for heavy tools, and plastic is easier to wipe clean in a damp room.
Roundup: six large storage units
1. 71.3-inch heavy-duty garage shelving unit, matte black
This steel unit has four adjustable shelves and is 71.3 inches wide, 24 inches deep and 70 inches high. The specs list a maximum weight of 5,000 pounds. It has lateral bars that connect the uprights and beams, and locking pins hold each shelf in place. The item weighs 80 pounds, and it includes foot mats, shelf pins and a rubber mallet. The listing says the shelves can be connected to other units. It suits a shop or a garage where you want heavy steel shelves with a wide front.
2. 79-inch wide steel garage shelving unit, 7,000 pounds
This unit is 79 inches wide, 24 inches deep and 79 inches high, with four shelves. The listing gives a total capacity of up to 7,000 pounds. The uprights are one piece, with no joints in the columns, and the coating resists rust. The shelves adjust in height, and the listing gives a set of diagonal braces and support bars. The shipment comes in two boxes that may arrive on different days, according to the listing. Assembly takes 10 to 15 minutes and needs no nuts or bolts. It is the highest-rated unit in this roundup.
3. 71.3-inch metal storage shelves, 5,000 pounds, 4 tiers
This unit is 71 inches wide, 24 inches deep and 70 inches high, with four adjustable tiers. The title and bullet points list a load of 5,000 pounds, and the listing does not separate the figure for each shelf from the total. The uprights are multi-fold bent steel with diagonal braces, and the shelves are high-gauge steel with four ribs each. The listing describes moisture and weather resistance. It is a good alternative to the first 71-inch unit for a garage or a basement, but check the shelf limit before you load a single level.
4. Sterilite 4-shelf plastic storage unit, flat grey
This plastic unit has four solid shelves and a closed back. It measures 34.5 inches wide, 14.38 inches deep and 57 inches high, and it weighs 17.1 pounds. The listing gives 50 pounds on each shelf and 200 pounds for the unit. The shelves are solid, so small parts do not fall through. It snaps together without tools using a tubular frame. The listing says the product is BPA-free and phthalate-free. It works well in a laundry room, a pantry or a basement where moisture is a concern.
5. C&AHOME 16-cube storage organizer, white
This system is a set of 16 plastic cubes, each 11.8 inches on every side. The assembled set measures 48.4 inches long, 12.4 inches deep and 48 inches high. The listing gives 11 pounds as the maximum weight for each cube. The cubes are PP plastic with an ABS connector and a metal frame, and the listing includes a hook that can hang keys or hats. The set is assembled with a wooden mallet and the instructions. Use it for books, toys or display pieces, and arrange the cubes into a wall or a cabinet.
6. C&AHOME 16-cube storage organizer, black
This is the black version of the same 16-cube system. Each cube is 11.8 inches on each side, and the assembled set measures 48.4 inches long, 12.4 inches deep and 48 inches high. The black finish suits a home office or a bedroom where you want a darker look. The listing includes a wooden mallet and an instruction manual. Keep the cube loads light, because the listing sets the limit at 11 pounds per cube.
Review: 79-inch wide steel garage shelving unit
The 79-inch unit is the strongest unit in this roundup. The listing gives a total capacity of up to 7,000 pounds, which is well above the others. The steel uprights are one piece, with no joints, and the listing says that design removes the weak points where a load can bend a shelf.
The shelves adjust in height, so you can set each level to fit tall or short items. The listing describes locking pins that keep each shelf in place once it is set. The coating is an anti-corrosion finish that the listing says resists rust, scratches and wear, which is useful in a damp garage or basement.
The unit is 79 inches wide, 24 inches deep and 79 inches high. The shipment arrives in two boxes that may come on different days, according to the listing, so plan for the second box. Assembly takes 10 to 15 minutes with the tools included and no nuts or bolts.
Two close alternatives from this roundup are the 71-inch unit from the first listing, which is narrower and lists 5,000 pounds, and the Sterilite plastic unit, which is closed on the back and rated at 50 pounds per shelf. If you want plastic and a closed back, the Sterilite is the better choice.
Placement and loading plan
Put the heaviest items on the bottom shelf. A large unit is most stable when weight sits low, and the steel units are 79 and 70 inches high. Keep tools, paint and heavy bins on the lowest level, and store lighter boxes above.
Anchor a tall unit to the wall if the listing or your local rules call for it. The steel listings describe braces and lateral bars, which add stability, but a tall unit that is fully loaded can still tip on an uneven floor. Use the foot mats the listing includes, and check that the unit stands level.
Plan the space in front. Leave room to pull a bin out of the lowest shelf without moving the others. A unit that is set too close to a wall or a car can block the way in.
Check the shelves every few months. Steel holds its shape under load, but the plastic shelves on the Sterilite unit and the cubes can sag if they carry more than the stated limit, so keep each shelf within its figure.
FAQ
How much weight can a large storage unit hold?
The listings give different figures. The 79-inch steel unit lists 7,000 pounds. The 71-inch steel units list 5,000 pounds. The Sterilite unit lists 50 pounds per shelf and 200 pounds for the unit. The C&AHOME cubes list 11 pounds per cube.
Do these units need assembly?
Yes. The steel units take about 10 to 15 minutes and use no nuts or bolts, according to the 79-inch listing. The Sterilite unit snaps together without tools. The C&AHOME cube sets are assembled with a wooden mallet and instructions.
Can the steel units be placed outdoors?
The steel listings describe moisture and weather resistance, but the listings are for garages, basements, shops and warehouses. Keep them under cover, because the coating is meant for indoor storage in damp rooms, and the listings do not state outdoor use.
Are the plastic units suitable for a garage?
The Sterilite unit is listed for garages, basements, mudrooms and laundry rooms. The C&AHOME cubes are listed for bedrooms, living rooms and offices, so they suit indoor storage rather than a garage.
How tall are these units?
The 79-inch steel unit is 79 inches high. The 71-inch steel units are 70 inches high. The Sterilite unit is 57 inches high. The C&AHOME cube set is 48 inches high when assembled as 16 cubes.
Can I connect more than one unit?
The 71-inch steel listing says the units can be connected to create a wider run. The C&AHOME cubes can be arranged in many layouts. The Sterilite unit and the 79-inch steel unit are listed as freestanding.
Bottom line
For the heaviest load in a garage or shop, choose the 79-inch steel unit, which lists 7,000 pounds. For a 71-inch steel unit with a 5,000-pound limit, choose one of the two listings and check the per-shelf figure. For a closed plastic unit in a laundry room or basement, choose the Sterilite unit, which lists 50 pounds per shelf. For an open display or a home office, choose the C&AHOME cubes in white or black, and keep each cube within its 11-pound limit. Measure the path and the ceiling before you order.
For a wider look at garage shelving, read Best Garage Storage Racks and Shelving Units for Heavy Loads. For a 5-tier wire unit, see Sakugi 5-Tier Wire Shelving Unit Review: Size and Load.