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Round up each dimension to the nearest whole number to get the nominal size. Example: 19 1/2" x 29 1/2" x 3/4" in → 20x30x1 nominal. Search by nominal size on our site for the best fit. Pro …

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Measure length × width × depth with a tape measure to find the actual size. Round up each dimension to the nearest whole number to get the nominal size. Example: 19.50x19.50x3.63" …

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Measure length × width × depth with a tape measure to find the actual size. Round up each dimension to the nearest whole number to get the nominal size. Example: 17.75x17.75x0.75" …

Round up each dimension to the nearest whole number to get the nominal size. Example: 19.5 × 19.5 × 0.75 in → 20×20×1 nominal. Search by nominal size on our site for the best fit. Pro Tip: …

Measure length × width × depth with a tape measure to find the actual size. Round up each dimension to the nearest whole number to get the nominal size. Example: 13.00x21.00x3.63" …