I have many skids of steel door cut outs. These cut outs are excellent for subflooring insulation. Farmers and new home construction use them to help insulate before concrete is poured. Even winter ice fisherman have used them for insulating their huts. Price is approximately $0.15 per square foot. I don't sell partial bundles. Bundles come with 50 pcs. Approx size Bundles: 20"x64" = 444 sq'. $65.00 22"x48" = 366 sq'. $55.00 22"x36" = 275 sq'. $40.00