1" x 24" x 54" High Density Upholstery Foam | Michaels
Custom Indoor Down Cushions and Envelopes | FoamOrder
4 X 24 X 72 Wholesale Upholstery Foam Pack - Etsy
2 x 18 x 108 Upholstery Foam | OnlineFabricStore
Amazon.com: Foamma 2" x 22" x 22" High Density Upholstery Foam Padding, Thick-Custom Pillow, Chair, and Couch Cushion Replacement Foam, Craft Foam Upholstery Supplies, Foam Pad for Cushions and Seat Repair :
Closed Cell Foam Roll - FoamOnline
HR-70 High Resilient Extra Firm Cushion Foam (1-2 Sheets)