INTEK's patented Zonall electric infrared heater modules are designed to work individually for small areas or can be ganged together for larger areas. Ideal for commercial and industrial space heating applications, INTEK electric infrared Zonall heaters may be ceiling hung or wall mounted for effective space heating. INTEK's Ceiling Stealth space heating units are available for drop ceiling installations such as offices, basements, cafeterias, vestibules, entryways, and cubicles. INTEK's patented design eliminates noise and maintenance while offering the highest efficiency since no blowers are necessary. Another distinct benefit, for clean and dirty environments alike, is that there are no reflectors to clean or polish making the INTEK design maintenance free and completely energy efficient.