How to Match Replacement Cushions to Your Seat
Measure your own seat's width and depth by hand and compare it to the cushion's published size - this site cannot do that comparison for you. The only seat measurement published anywhere in this catalogue is one chair's own "20 inch seat width," with no matching depth, so there isn't enough furniture-side data to check a fit automatically.
What the two cushion sets publish about themselves
The L-shaped cushion set states a 25.6 x 25.6 x 4 in seat cushion (plus separate 25.6 x 13.5 in back cushions and 18.1 x 13.5 in corner-back cushions), 9 pieces total, per its own feature text. The square-cornered cushion set states a 23 x 20 x 4 in seat cushion and a 22 x 19 in back cushion, per its own feature text (the Creators API's own item dimensions for this one give a 1 in wider figure - see its product page for both numbers).
Why this site can't check compatibility for you
Checking whether a cushion fits a specific chair needs that chair's own seat width and depth. This site checked every seating product's own title, feature text and productInfo for a published seat measurement: the only one that exists in this entire catalogue is the stackable chair's own "20 inch seat width" - no matching depth, and no other chair or set publishes a seat width or depth at all. That's not enough to compare against either cushion's own size.
What matching dimensions would and wouldn't prove
Even where two numbers happen to match, that is not a guarantee of fit - mounting straps, ties, seat-back shape and frame geometry can still differ between a cushion built for one listing's chair and a different chair with a similarly sized seat. This site would label that kind of match as "dimensions correspond," never as confirmed compatibility.
How to check your own seat
Measure the flat seating area of your own chair or sectional - width side to side, depth front to back - and compare it directly to the seat-cushion figures above, not the chair's overall outer width (a chair's outer footprint includes armrests and its base, which is a different number from the seat itself).
Questions
Can I look up which Amopatio chairs these cushions fit?
No - this catalogue doesn't publish seat width or depth for any chair or set except a single, incomplete figure (one chair's seat width, no depth), so there isn't enough data to build that lookup honestly.
Are the two cushion sets the same shape?
No - one is L-shaped, sized for a corner sectional seat (25.6 x 25.6 in); the other is a plain rectangular seat and back cushion (23 x 20 in and 22 x 19 in).
What should I measure on my own chair before ordering?
The flat seat cushion area itself - width and depth - not the chair's overall outer width, which includes armrests and the base and will read larger than the seat.