Interior SLEEVE and GRILLE are not included and required for a new installation. The Cooper&Hunter PTAC Packaged Terminal Air Conditioner is ultra-quiet! Their low decibel levels and outstanding sound-reduction ratings make PTACs the best choice for any environment.The 9,000 BTU 208/230 volts unit has a high EER rating of 11.4. The higher the EER the greater your energy savings. The Electronic Controls are featured on an easy-to-use panel. The control panel displays the temperature and offers one-touch temperature control up and down. Temperature settings range from 62F to 90F.The PTACs are ideal for virtual use anywhere: in apartments, hotels, motels - any space where a single area or room with an outside wall needs to be climate controlled.The entire package is self-contained. No ducting is needed to install a Cooper&Hunter PTAC unit. PTAC units are installed on an interior wall with the back of the unit vented to the exterior. The units are durable, quiet, and reliable. All you have to do is pull out the washable filter for easy maintenance. The fresh air intake design and washable filter ensure a cleaner, fresher and more comfortable indoor air quality.