Proma fr4 epoxy resin board cu 35 m 15 thickness proma 104100 0160 the proma fr4 epoxy resin board cu 35 m 15 x 100 x 160mm is a single sided board that is ideal for constructing fixings chassis facings etc the sheet can be easily worked using normal tools proma 104100 0160 fr4 epoxy resin board cu 35 m single sided 15 x 100 x 160mm