Sliding doors are used to tightly seal the growing room. The positive seal during steaming of the growing room is provided by EPDM gaskets. The aluminum housing, stainless steel frame with stainless steel guide and hardware ensure many years of use. The door is made of PIR sandwich panel material with a thickness of 80mm. Guide wheels are made of durable polyamide that makes them long-lasting and resistant to cracking. In the DP3 model version 80mm PIR sandwich panels with stainless steel outer skin are used. This version is mainly used for freezers and a walk-in coolers.