They include two panels of glass with a layer of gas between the panels.
How to open double hung windows for cleaning.
Completely unlock your windows by moving the latches on the bottom sash inwards.
Steps for cleaning double hung windows.
Then repeat on the left side.
Charles benedict from hardy jensen gives a 90 tutorial on how to open a double hung window so that it can be clean from the inside of the home.
Double paned windows or dual pane windows offer greater insulation for your home.
Raise the bottom sash up six to eight inches.
Find the tilt latches sash releases at the top of the window and slide them inward while pulling toward you.
Locate the tilt hatches on the window s bottom sash and pull inwards as though the hatches are meeting in the middle.
Releasing them before they are completely free of the frame can damage the painted finish on the window.
If your window does not have tilt latches push the right jambliner the frame the window runs on towards the wall while pulling on the upper corner of the sash.