Mounted on roller bearing, epoxy coated sides. Equipped with 60 quart removable aerated plastic basket. Unit comes fully assembled. FE-PSH15-1-60W mounts to cabinet floor, cannot be door mounted and FE-PDMSH15-1-60W mounts to cabinet floor and cabinet door with the included door mounting hardware for 1-1/2" face frame cabinetry. Replacement basket is also available.