LOCATION: This Filter Resides On The Back Of The AC Unit - This Is The Lower Filter That Wraps Around The Corner! This Filter Comes Flat But Is Easily Installed In The Filter Frame (Not Included). This Offering Is For The Filter Only! MODELS: This Air Filter Is Specifically For The Following Air Conditioner Model Numbers: LP0621WSR, LP0721WSR, LP0820WSR AIR FILTER: This Filter Resides On The Back And Bottom Of The AC Unit. The Durable Air Filter Frame Has Preinstalled Mesh That Filters Air Flowing Into The Air Conditioner. Air Filters Help To Keep The Inside Component Parts Of The Air Conditioner Clean Which Extends The Useful Life Of The Air Conditioner! INSTALLATION INSTRUCTIONS: The Original User Manual For Your Air Conditioner Contains Detailed Instructions On Replacing The Air Filter! WHAT YOU GET: This Offering Is For ONE Air Filter 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! This part does NOT come with installation instructions as the user manual contains detailed instructions on replacing new air filter. This air filter is for the following Air Conditioners: LP0621WSR, LP0721WSR, LP0820WSR This Filter Resides On The Back Of The AC Unit - This Is The Lower Filter That Wraps Around The Corner! This Filter Comes Flat But Is Easily Installed In The Filter Frame (Not Included). This Offering Is For the Filter Only! If your Air Conditioner model number is NOT listed above, please send us a message so we may help you obtain the correct part!