Thickness = T
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How to measure
Measure the exact dimensions of the seating surface (not the old cushion), at the widest points. Thickness is measured with the cushion lying flat. Fractional inches welcome — 23½″ is 23.5.
Custom Mattress & Topper
Custom-cut mattresses and toppers for RVs, campers, boats and odd-size beds.
From $19.99
Accepts ¼″ steps — 23.5 means 23 ½″
Optional — priced by your actual size
Anything the workshop should know? Leave a note and/or reference photos — we'll follow them when cutting and covering.
Up to 6 images, each under 5MB
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