resin lined vacuum shelf dryer. Cored for steam heating. Distance between shelves 4". Unit has (12) 39 1/2" long x 19 1/2" wide x 2" deep 316 stainless steel trays. Hinged door with swing bolt closure. All resin lined wetted parts. Insulated carbon steel housing. Openings: vacuum 1-6", 2-1/2"; steam 4-2 1/4".