The Perlick 4220J4 Beverage Trunk Housing is designed for remote beer systems, featuring a durable and water-resistant jacketing. It includes four 3/8" I.D. Bev-Seal Barrier product lines, which are both NSF-certified and color-coded for easy identification. The trunk housing is equipped with 1/2" O.D. copper coolant lines and 3/4" thick thermal insulation to ensure optimal temperature maintenance. Its black PVC outer wrap is flame-retardant, providing an added layer of safety. With a 3" diameter overall, this product is sold by the foot, making it a versatile choice for your beverage dispensing needs.