4 x 8 Sheet of Hardboard Backs Part Number: BM4X8 4 x 8 Sheet of Hardboard Backs Part Number: BM4X8 Roll over image to zoom in. Contact to Order Download PDF Print Product Options and Numbers Example Part #: BM4X8 P PLT 4′ x 8′ Sheet of Hardboard Back: BM4X8 Back Panel Style: P, M, ME, W, PW Standard Finish: PLT, IA1, N/A, Suffix Key P – Pegboard Back M – Marteck Back ME – Econo Marteck Back W – Woodgrain Back PW – Peg Woodgrain Back PLT – Platinum IA1 – Oak Melamine N/A – No Finish