Our new PATENTED WARM-AIR BLOWER FAN Assembly System blows warm air around the inside of the 12-gauge, free-standing frame, under the door sweep and over the threshold eliminating the potential for the corrosive properties of ice to build up.
U.S. Patent No. 11,221,174 & U.S. Patent application No 17/554,030
Making sure that the seams are completely sealed so that the cooler/freezer box walls become monolithic.