There should be tabs to the left and right of the locks, on the edge of the bottom sash, open the window a couple inches, push those tabs toward the lock at the same time and pull toward you, to tilt the top in leave the bottom window tilted in, and repeat the same process, the tabs are on top of the shash for the top window
Our Double-Hung windows tilt in for easy cleaning. Here is a video to see how easy it is to clean your windows without the hassle of ladders! https://youtu.be/6id8YhJZryc
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