Inquiry (采购产品): hardboard Do you sell Class 2, S1S, hardboard 4' x 8' sheet, with certing to ANSI 135.4-2004, and thickness tolerance between .215" - .255"? Thanks. egoodwin@stonemountainengineering.com **** Hidden Message ***** Elizabeth Goodwin 80521 USA Company: SME E-mail: egoodwin@stonemountainengineering.com **** Hidden Message ***** egoodwin@stonemountainengineering.com