Boat Mattress Trapezoid

Dimensions will be rounded to the nearest 1/8"3 mm1/8" (3 mm).

Find out how to properly measure and order your foam.

Enter dimensions in the boxes, then click the “Show Prices” button.

5-Sided Polygon

This trapezoid shape has a back that is parallel to its front. The left side and the right side are of unequal length, and neither side forms a right angle with the front or back. If your cushion more closely resembles one of the similar shapes below, please click on it to use that shape instead: