SPECTRACOOLâ„¢ Indoor model air conditioner. Slim fit design. Standard cut-out dimension for easy exchange. Energy efficient rotary compressor. R134a earth-friendly refrigerant. Models for 115, 230 and 400/460 3-phase VAC power input. UL Listed to save customers time and money with agency approvals. Active condensate management to prevent dripping water. Aesthetic design plastic cover to optimize air flow. Three mounting options, fully recessed, partial recessed and surface mount. Remote access control option for monitoring units worldwide. Easy filter replacement for extremely dusty environments. Dust resistant coils for filter less operation. Standard indoor air conditioner models also include door switch.