Made from stock 3/8 inch thick ensolite, type ah, foam pad; pilots seat; finished size is 13.4 across top, top corners are cut on 2.1 radii; pad is 9.0 high and 1.7 wide at bottom, thickness is .06 at bottom and .38 at top or may be installed as a 3/8 inch thick slab and tapered to diminsions shown on next assembly