K Knowbody · 13 x 20 ft · Steel
K Knowbody 13x20x8.3 FT Metal Garage Shed Large Building Kits: specs and what fits
K Knowbody 13x20x8.3 FT Metal Garage Shed Large Building Kits is a 13 x 20 ft (260 sq ft) steel shed, listed at $1,449.99, or $5.58 per sq ft, above the $5.25 median for steel kits we track. It can hold a lawn tractor and needs a 15 x 22 ft gravel pad of about 6.3 tons.
K Knowbody 13x20x8.3 FT Metal Garage Shed Large Building Kits specifications
| Brand | K Knowbody |
|---|---|
| Nominal footprint | 13 x 20 ft |
| Floor area | 260 sq ft |
| Material | Steel |
| Floor | not stated in listing; plan a floor kit or base |
| Listed price | $1,449.99 |
| Price per sq ft | $5.58 (median for steel: $5.25) |
| Features in listing | see listing |
| Permit status (size only) | Permit expected |
Figures come from the manufacturer's Amazon listing. Nominal sizes are usually measured at the roof line or outside the walls, so interior floor is a little smaller. Confirm door opening and interior height on the listing before buying for a mower or tall tools.
What fits in the K Knowbody 13x20x8.3 FT Metal Garage Shed Large Building Kits?
| Item (on its own) | How many fit |
|---|---|
| Lawn tractor | 5 |
| Push mower | 12+ |
| Adult bike | 12+ |
| Wheelbarrow | 10 |
| 96 gal trash can | 12+ |
| Shelving unit | 12+ |
Counts assume items flat on the floor with a clear aisle from the door. Wall hooks for bikes and tools raise them a lot. Run your own list through the shed size calculator.
What else does it need?
- Base: 15 x 22 ft pad, 6.3 tons of stone at 4 in, or a 159-bag slab. Full foundation quantities for a 12x20.
- Anchors: about 8, corners plus the long walls. Anchor kits compared.
- Inside: shelving, a solar light and a proper lock. Shed shelving, solar shed lights.
Foundation and anchors for this shed
Prices change often; the button shows today's price on Amazon.
Similar-size kits from other brands
- Aoxun 12x20x9.3FT Metal Storage Shed Outdoor Large Garage Shed (12 x 20 ft, $1,400)
- Best Barns Inc. Belmont 12 ft. x 24 ft. Wood Storage Shed Kit (12 x 24 ft, $9,486)
- Arrow Shed Elite 14' x 16' Tall Outdoor Steel Storage Shed (14 x 16 ft, $2,030)
- Arrow Classic Metal Shed (12 x 17 ft, $920)
- Arrow Storage Products 12' x 17' Murryhill Garage Galvanized (12 x 17 ft, $2,900)
- Little Cottage Co. 10x20 Value Workshop Shed (10 x 20 ft, $4,069)
Frequently asked questions
What size foundation does the K Knowbody 13x20x8.3 FT Metal Garage Shed Large Building Kits need?
A 13 x 20 ft shed sits best on a pad 1 ft larger on every side: 15 x 22 ft. At 4 in of compacted crushed stone that is about 6.3 tons; a 4 in concrete slab under the footprint takes 159 bags of 80 lb mix. Whatever base you choose, it must be flat and level, because resin and steel kits rack out of square on uneven ground and the doors stop closing.
Does the K Knowbody 13x20x8.3 FT Metal Garage Shed Large Building Kits need a permit?
At 260 sq ft it is over every common exemption, so plan on a permit. The IRC exempts one-story storage sheds up to 200 sq ft, but many towns lower that to 120 or 100 sq ft, and setbacks, HOA rules and electrical work apply regardless. Check your local code before ordering.
Is $1,449.99 a good price for this shed?
It works out to $5.58 per sq ft. Across the 69 steel kits we track, the middle 80 percent run $3.08 to $13.17 per sq ft with a median of $5.25, so this listing is above the $5.25 median. Amazon prices move often, and the same model in another color can list for a different price, so compare the variants below.
This page is researched guidance, not professional engineering, legal or building-code advice. Sizes, loads and permit rules vary by product and by town: check your local code and the kit manufacturer's instructions before you build.