The DiversiTech® D408K0500B3B6 tear resistant mini-split line set is designed for mini-split air conditioning systems. Size is 1/2 in. insulation wall, 1/2 in. suction line, and 1/4 in. liquid line. A durable polymeric jacket minimizes installation damage and easily conforms to bends. An expanded closed-cell structure and unique formulation resists moisture vapor intrusion and UV damage.