H-Bar Profile For joining Carbolite sheets together, attach joiner to rafter or purlin support. Place Carbolite sheets into the neoprene gaskets and push into H-Bar in position. Available for 8 mm , 10mm and 16mm twin wall polycarbonate. Recommended Spacings ( subject to CARBOLITE engineer specs.) These apply to ALUMINIUM Structures only. Recommended Spacings ( … Continue reading Accessories