PRO-VAC POLYESTER RELEASE FABRIC – For hand lamination and vacuum infusion process. Red tracer indicates peel ply being left behind on the laminate. The fabric leaves a finish that can aid in the sanding or grinding of the laminate. May be used with phenolic resin as well as all other standard resin systems. Maximum use temperature of 356°F. Product is sold by the 60″ x 328′ Roll.