Transform your CRB Palace Dog House into a cool and comfortable oasis for your furry friend with the Dog Palace Pro Series CRB Palace A/C Adapter Panel. This custom-molded panel is designed to replace the rear panel on all CRB Palace Dog House models (sold separately). Just remove the panel to enable easy installation of a 5,000 BTU wall-mount A/C unit (not included). Without the hassle of cutting or fabricating, your pup will be feeling easy-breezy in no time. And in the winter, you can simply cover the A/C unit to conserve heat.