The Perlick 4303-6 Beverage Trunk Housing is designed for remote beer systems, featuring six 5/16" I.D. Bev-Seal Barrier beer lines that meet NSF standards. Each product line is both color-coded and number-coded for easy identification. The housing includes 1/2" O.D. copper coolant lines and is insulated with 3/4" thick thermal material to maintain optimal temperature. Its durable black PVC outer wrap is flame-retardant, ensuring safety and longevity. With a 3-1/2" diameter, this custom-fabricated trunk housing is sold by the foot, allowing you to specify the exact length needed for your setup.