Step 1: Measure the Door Opening
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Before you buy anything, measure the opening. Pull your tape across the width at the top, middle, and bottom, then do the same for the height on both sides. Openings are rarely dead square, so go with the smallest number you get. That is the size your screen door needs to clear. Write it down and take it with you to the store so you match the kit to your door.
Tip
Measure the opening itself, not your existing entry door. The two are not the same.











