r Hygienic door systems Hermetically Sealing Hygienic Hinged Door Pharmaceutical Cleanrooms Research Laboratories Pharmaceutical Manufacturing Lowers air handling costs Reduces cross contamination Smooth hygienic surface Easy to clean and maintain Will not peel, warp, swell, rot or rust. Product Details: Dortek hermetically sealing hygienic hinged doors are designed for areas where control of air leakage is There are many applications for these doors including clean room, laboratories, BSL3 & BSL4 labs and phar maceutical manufacturing. Also any other areas re- quiring a clean, hygienic well sealing door. The door has a unique wrap around frame with a neo- prene seal incorporated which en ables the door to seal perfectly. Air leakage has been independently pressure differential are available Certified hermetic sealing: Class 3 / permeability certificate). Graph of air permeability per unit area