LOCATION: This Caster Is Located On The Bottom Of The Air Conditioner Unit. Caster Wheel Come In A Variety Of Sizes - To Obtain The Correct Size, Verify That Your AC Model Number Is Within This Offering! MODELS: This Caster Is Specifically For The Following Air Conditioner Model Numbers: PACEM370WH, PACEM365WH, PACEM367WH, PACEM375WRC, PACEM369S AIR FILTER: The Wheel Part Of The Caster Is Made Of A Hard Plastic - The Top Mounting Plate Is Comprised Of Metal. INSTALLATION INSTRUCTIONS: Installation Instructions Do NOT Accompany This Part! When Removing The Old Caster, Be Sure To Retain New Screws As New Screws Do Not Accompany The New Part! WHAT YOU GET: This Offering Is For ONE Caster 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. This caster is compatible with the following Air Conditioners: PACEM370WH, PACEM365WH, PACEM367WH, PACEM375WRC, PACEM369S When removing your old caster, be sure to retain the screws as new screws are not included with this part. If your Air Conditioner model number is NOT listed above, please send us a message so we may help you obtain the correct part!