Home > Shop > Drywall & Insulation > Insulation & Vapour Barrier > Rigid Foam > 4x8x1" CLADMATE CM20 SHIPLAP (R5) 4x8x1" CLADMATE CM20 SHIPLAP (R5) Item #: 05059420 Mfr #: 1CM48T3 $37.92 each Checking Inventory Add to Cart Overview: TYPE 3 - 20PSI