20" x 20" Outdoor Cushions – Custom Made to Your Exact Size

Foam thickness for a 20 x 20

Twenty-inch squares are the patio default — dining chairs across a decade of big-box sets, wicker dining squares, bistro oversize. Thickness 2.5–3 inches keeps table height; 3 is the comfortable standard; 4 only on low frames. The recline-and-slide problem shows up here too: on a tilted deck, an exact-fit cut is what keeps the pad sitting true — and a thin non-slip rug pad trimmed slightly smaller than the cushion, laid flat underneath, is the honest fix if the chair gets dragged around.

Density: 35D seasonal, 50D daily, high grades for lounge duty. Confirmed with your dimensions before cutting, same tolerance as every size.

“Clearance” in the cushion trade means one thing: a line is discontinued and the warehouse is emptying. The pads were cut to frames that no longer sell, in colors that did not move, at sizes that fit whoever bought them first. That is why clearance hunting at a specific size — twenty by twenty, or any square with a number attached — fails so reliably: you need one size, and the bin holds every size except yours.

Made-to-order inverts the logic. Nothing is warehoused, so nothing needs clearing: your pad is cut when you order it, in the fabric you picked, at the number you measured. The honest comparison is not clearance price versus custom price — it is the cost of two wrong clearance pads against one right one. The formula is published above so the math is yours to check before ordering.

Ordering 20 x 20 pads as a set

Dining sets are the usual reason: four, six, or eight chairs that took the same square when they left the factory. Search behavior matches — “set of 6” rides with this size as often as with any small square. One order, one fabric run, every pad cut to the same numbers; head chairs that measure an inch wider (common on older sets) get their own line item in the same run rather than rounding down to match the herd.

Thickness across a set: whatever you pick applies to every chair, because a mixed-height dining set is visible from across the yard. Three inches is the dining standard at this square; two-and-a-half keeps tight tables workable; four belongs on slow-dinner frames.

Close sizes: 19, 21, and the rounding trap

The inch on either side of 20 is real territory. Nineteen is a documented search size in its own right; twenty-one runs on wicker dining and chat frames; the library holds originals at this square from 19.5 to 20.25. The trap is rounding a 19.75 deck up to 20 — a quarter inch of overhang at the front rail shows on every slat frame, and a half inch starts riding up at the corners. Order the number you measured: 19.75 costs the same as 20 here, and fits like nothing off a shelf.

Where a 20 x 20 also lives: indoors

The square that patios claim is arguably busier inside. Dining chairs are the volume case — kitchen and dining-room seats cluster at 16–20 inch squares, and 20 is where American dining frames land when they are not 18. Kitchen islands and peninsula overhangs run 20-inch pads on backless counter stools. Banquettes divide their long decks into seat modules — a 60-inch nook bench takes three, an 80 takes four — and modularity lets you flip and rotate pads individually, which evens out foam wear across years of breakfasts.

Indoor duty changes two specifications, not the size: thickness runs thinner than patio deep-seating — 2 to 3 inches at tables, because the table’s height was designed around the frame, not the cushion, and 3–4 on ottomans and benches where comfort outranks clearance — and fabric picks shift from weatherproof tiers to the weaves that feel right against skin and clothes: Cotton Linen for kitchen duty, Premium Velvet for the formal room.

New covers or new foam? Tired seat pads fail in one of two ways, and the fix differs. Covers fade, stain, or split while the foam still springs back — finger-test the center; foam that rebounds was doing its job. Foam compresses and dishes while the cover still looks fine — the sit tells you before the fabric does, a seat that keeps a hollow after you stand. We cut full cushions — foam and cover sewn as one piece — so a replacement here is both at once, built to the dimensions you send.