I agree without exception to the other buyers .... The door is absolutely stable and class. I've already ordered the 2nd. Not to compare with hardware store or discount store flyscreen !!! We're talking about 2 classes higher !!! For Description: The description is partly very misleading or just plain wrong !!! The detailed views are unclean ... There is of Interior; written stop side and this then turned on other sites again; Schanierseite. I was so confused that I had to look at is what Wikipedia stop or Schanierseite !? The mounting of the spring is also a thing in itself ... and the description for it. Then, when the door is still laterally grown anderst as in the description then it gets even funnier :-) But I still hab`s geschaft !!! 5 hours for two !!! I do not know how good or bad it is .. but fit perfectly, looks very very valuable. All parts of the swing, or corner joints are made of metal or be screwed. Perfect !!!! The flyscreen really stretched themselves, do not pretension here .... what I want to explicitly write the Sägeberechnung: Many in the customer reviews wrote the information to calculate error would be .... I can not confirm this! I have measured the light level and proceed exactly this. The door fits perfectly !!! What think very important that is at least the frame of the door. 3.5cm must be .... If this is less that Sägeberechnung must be adjusted. I hope I could help....