Best 16×20 Storage Building Alternatives for Backyard Storage
If you need a 16×20 storage building, compare the required footprint, enclosed storage, and weather protection before buying. The listed options do not include an exact 16×20 enclosed building: the WACASA and K Knowbody sheds measure 10×16, while the LANTRO JS metal structure is 13×20 and the Quictent option is an open-sided 20×20 carport. The SAMRELAX shelving unit can help organize a building’s interior. Check local rules and the product’s full specifications before choosing.
| Product | Best For | Listed Size or Type |
|---|---|---|
| WACASA Metal Shed | Daylit enclosed storage | 10×16 ft |
| K Knowbody Metal Shed | Ventilated enclosed storage | 10×16 ft |
| LANTRO JS Metal Structure | Large vehicle or equipment coverage | 13×20 ft; no floor |
| Quictent Lean-to Carport | Open-access vehicle shelter | 20×20 ft |
| SAMRELAX Garage Shelving | Organizing tools and supplies | 72x36x16 in |
WACASA 10×16 Metal Shed

Best for: Buyers who want enclosed backyard storage with natural daylight. This 10×16 shed has a 20-gauge structural support frame, 30-gauge panels, and two clear polycarbonate roof panels that bring daylight inside. The listed weather ratings are up to 50 PSF snow load and 120-plus MPH wind resistance when anchored.
It is a smaller-footprint alternative to a 16×20 building, suitable for storing items such as tools and outdoor equipment when its dimensions meet your needs. The powder-coated frame is intended to resist rust, salt spray, acid rain, and scratches. Choose it for its skylights and stated structural ratings; avoid it if you require a full 16×20 footprint. Proper anchoring is important to the stated wind rating.
K Knowbody 10×16 Metal Shed

Best for: Buyers seeking an enclosed 10×16 shed with ventilation and daylight features. The listing gives exterior dimensions of 114.6 inches wide, 194.4 inches deep, and 84.3 inches high, plus 896 cubic feet of storage capacity. It has a reinforced 20-gauge frame, 30-gauge steel panels, two roof skylights, acrylic side windows, and dual vents.
The product is listed for storing lawn equipment, bikes, tools, patio furniture, grills, and seasonal gear. Its stated ratings are up to 50 PSF snow load and 120-plus MPH wind resistance when properly anchored to a solid, level base. It is better for buyers who value airflow as well as daylight. Its 10×16 dimensions do not provide the requested 16×20 footprint.
LANTRO JS 13×20 Metal Structure

Best for: Buyers who need a broad covered area for vehicles or recreational equipment. The listing describes 250 square feet of floor space, a steel tube support frame, reinforced galvanized steel, and a lockable design. It is stated to have a 20 pounds-per-square-foot snow-load capacity and 50 mph wind resistance.
This option is 13×20, not 16×20, and is listed without a floor. The seller says it can be installed on a concrete, wood, or brick foundation, and notes that assembly requires effort. Choose it if its dimensions and foundation requirements fit your property; avoid it if you need a supplied floor or fully enclosed building. Confirm the exact configuration and anchoring details before purchase.
Quictent 20×20 Lean-to Carport

Best for: Buyers who want open-sided vehicle coverage rather than an enclosed storage building. The 20×20 structure has a single-slope roof, four-side access, a galvanized steel frame, 16 diagonal braces, and nine base anchor plates. The listing says its roof grid supports up to 14.3 PSF snow load, described as about eight inches of snow.
The larger footprint may suit vehicle parking or equipment storage, but this is a carport, not a lockable enclosed shed. Choose it if drive-through access and roof coverage matter more than walls. Avoid it if you need protection from unauthorized access, windblown rain, or a fully enclosed storage area.
SAMRELAX Heavy-Duty Garage Shelving

Best for: Buyers who already have a shed, garage, or storage building and need organized vertical storage. This rack measures 72 by 36 by 16 inches and uses a boltless snap-in design. The listed features include a powder-coated frame, MDF shelves, and a capacity of 400 pounds per tier.
It can help separate boxes, tools, and parts from floor-stored equipment inside a building. Assembly is described as requiring no tools, with a plastic mallet included. This is shelving, not a building or weatherproof enclosure, so choose it as an interior organization addition rather than a substitute for a 16×20 structure.
Buying Guide: Choosing a Storage Building
Do you need an exact 16×20 footprint?
Measure the intended site and compare it with the manufacturer’s exterior dimensions, not just a rounded size label. A 16×20 footprint is 320 square feet. The listed 10×16 sheds are smaller, and the 13×20 structure is narrower than 16 feet. Also allow space for doors, assembly, access, and any required setbacks.
Should you choose an enclosed shed or an open carport?
An enclosed shed offers walls and a more secure place to store equipment. A carport provides open access and roof coverage but does not enclose belongings. A structure listed without a floor may require a separately prepared base. Match the building type to whether you need lockable, enclosed storage or open vehicle shelter.
Which weather and foundation details matter?
Compare the stated snow and wind ratings, and note any conditions attached to them. For example, some listed ratings depend on proper anchoring or a solid, level base. Confirm foundation requirements, local building rules, drainage, and the manufacturer’s assembly instructions before buying.
How can you plan the interior?
List the largest items first, including their dimensions, then plan walking and door-clearance space. Shelving can use vertical room for smaller supplies, while bulky equipment may need clear floor space. Confirm shelf dimensions and stated load capacity before placing heavy items.
Frequently Asked Questions
Is there an exact 16×20 enclosed building in this selection?
No. The products listed include 10×16 sheds, a 13×20 metal structure, a 20×20 open-sided carport, and interior shelving, but no exact 16×20 enclosed building.
Which listed option is best for enclosed storage?
The WACASA and K Knowbody products are both listed as 10×16 metal sheds. The K Knowbody listing includes side windows and dual vents; the WACASA listing highlights two roof skylights.
Is the 20×20 carport a storage building?
It is an open-sided carport, not an enclosed storage building. Its four-side access supports vehicle entry, but it does not provide enclosed, lockable storage.
Does the LANTRO JS structure include a floor?
No. Its listing identifies it as a structure without a floor and says it can be installed on a suitable concrete, wood, or brick foundation.
What should I verify before ordering?
Check exact dimensions, included components, foundation and anchoring requirements, weather ratings, assembly instructions, and local permitting or setback rules. Confirm that the available space accommodates both the structure and access around it.