1965-69 vent window backside channel material: easy to slip in, will fit either side; helps to stabilize the window. will fit 2-door, 4-door and convertibles. Note: you will receive enough for 1 wind window channel.... don't hesitate to call 918-753-2486 with any questions you might have. We also sell used vent windows, vent window glass, side glass and other miscellaneous for your door, call for prices and availability.