The Perlick 4220-5 Beverage Trunk Housing is designed for remote beer systems, featuring five 3/8" I.D. Bev-Seal Barrier product lines that are both NSF-component certified and color-coded for easy identification. The trunk housing includes 1/2" O.D. copper coolant lines for efficient temperature control and is insulated with 3/4" thick thermal material to maintain optimal beverage quality. Its durable black PVC flame-retardant outer wrap ensures safety and longevity. With a 3-1/2" diameter, this custom-fabricated housing is sold by the foot, allowing you to specify the exact length needed for your setup.