The Vinotemp 440TD G comes with two attractive double paned thermal glass doors and a 280-bottle capacity. Redwood and aluminum interior racking hold and protect each precious bottle of wine in 3-3/4" cubicles. Heavy-duty insulation (1 1.6 "R" factor) on the walls and doors and a magnetic gasket along the inside edge of the door maintain the efficiency and integrity of your storage environment.