Stainless steel exterior & interior,Electronic temperature controller,Maintains temperatures between -8F 0F,Chills glasses and plates to 0F,Heavy duty compressor with environmentally friendly R290 refrigerant,Slide out compressor assembly for easy maintenance,Easy glide stainless steel lid(s) with handle(s),Lid lock(s) standard,Pre-installed casters,MBGF24GR holds approximately 90 8 mugs or 85 10 oz steins,MBGF48GR holds approximately 240 8 mugs or 230 10 oz steins