ABS, Treated & Hardwood Cap Boards ABS Cap Board Product # Material Size 1055-25 ABS 1" x 8" x 16" 1055-24 ABS 2" x 8" x 16" Installation Instructions OTI CAP BOARDS INSTALLATION INSTRUCTIONS Treated Cap Board Product # Material Size WOPD1 Treated 1" x 8" x 16" WOPD2 Treated 2" x 8" x 16" Installation Instructions OTI CAP BOARDS INSTALLATION INSTRUCTIONS Hardwood Cap Board Product # Material Size HWOPD1 Hardwood 1" x 8" x 16" HWOPD1 Hardwood 2" x 8" x 16" Installation Instructions OTI CAP BOARDS INSTALLATION INSTRUCTIONS