WINDOW SLIDER: A Slider Is Commonly Used In Windows And Can Also Be Used In Sliding Doors. The Window Or Door Closes On Window Slider. The Exhaust Hose From The Air Conditioner Unit Is Then Attached To The Window Slider. MODELS: This Window Slider Is Compatible With The Following Model Numbers: LP0817WSR, LP1017WSR, LP1217GSR INSTALLATION INSTRUCTIONS: Installation Instructions Do NOT Accompany This Part - Your User Manual Contains Installation Instructions! WHAT YOU GET: This Offering Is For ONE Window Slider That Is Specifically For The Above Models! If You Do NOT See Your Model Number Listed, Send A Message For Assistance In Purchasing The Correct Item! LENGTH: Fully Collapsed, This Slider Is 18 Inches Long. This Slider Extends To 34 Inches Long! This part does NOT come with installation instructions. Installation Instructions Are Within Your Devices User Manual. This AC Window Slider is compatible with model numbers LP0817WSR, LP1017WSR, LP1217GSR. Fully collapsed, this slider is 18 inches long. Fully extended, this slider is 34 inches long. If your Air Conditioner model number is NOT listed above, please send a message for assistance in locating the correct part!