In the quest to get my chamber temps up as high as possible without a blanket, I noticed there is a gap on the back side of the door by the hinge. So I designed this one piece snap in place seal to be used when you are printing Nylon, ASA, PC, ABS, Etc.. Also Helps with keeping the smells in. I recommend you make sure your build plate is installed perfectly because this print uses the entire area. Also save my TPU print profile as I have found this to give the best TPU prints. PLEASE NOTE - THIS IS NOT DESIGNED TO STAY ON THE DOOR AT ALL TIMES, ONLY WHILE IN USE!