"The trick to this door is as follows.!!!! Re-screen your door using the thicker polyester pet screening..you can get this as tight as a drum without it tearing. It is a thicker product than the regular screening. Follow the instructions but put the screen door on your garage floor so you have a solid surface to work on. When you cut out the hole for the door put a 1"x 2" piece of wood under both sides of the door, but watch that you do not put the wood under the small locking clips. Put on the top half of the door in the correct location and do not use the mallet, Put a piece of a 1" x 2" over the top of the top piece and use a larger hammer to pound the top and the bottom pieces together. You have a solid base with the garage floor and the wood to protect the pet door from damage. The screen being slightly thicker than a regular screening will hold the two pieces together with no problem, After pounding in both sides then do the top and bottom of the door. This is the third one I have put in with no problems at all.....Try it. Good luck with your purchase...it works."
