Oversized, factory balanced, refrigeration system holds 33(degree)F to 38(degree)F (.5(degree)C to 3.3(degree)C) for the best in food preservation. Stainless steel exterior front, back, bottom. The very finest stainless with higher tensile strength for fewer dents and scratches. Aluminum interior side walls & back with stainless steel floor and ceiling. Designed to accept roll-in racks (inboard castors) with maximum dimensions of 27"L x 29"D x 72"H (686 mm x 737 mm x 1829 mm)(supplied by others). One (1) heavy gauge stainless steel ramp standard. Three (3) lifetime guaranteed, cam-lift hinges. Full 180(degree) open capability with a stay open feature at 120(degree). Lifetime guaranteed bolt style door locks standard. Entire cabinet structure and solid door are foamed-in-place using Ecomate. A high density, polyurethane insulation that has zero ozone depletion potential (ODP) and zero global warming potential (GWP).