Quick view Compare Add to Cart FinPan PRO2503660: ProPanel 3' x 5' x 1/4" ProPanel® is a new generation of backerboard that offers waterproof performance in a six pound board that is mold and mildew resistant. ProPanel® consists of high-density expanded polystyrene reinforced on both sides with fiberglass mesh and a... MSRP: Was: Now: $25.00 Quick view Compare Add to Cart Quantity Add to Cart