A compact, efficient and versatile heating system for add-on rooms, apartments and homes! Williams’ “through-the-wall or through-the- window” gas furnace is an unobtrusive, self-contained direct-vent system that installs easily and quickly using a unique slide-in/slide-out chassis. This design feature also makes servicing easy.
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Williams compact design incorporates an attractive front grille that extends only 3¼ inches into the room, saving valuable interior space. The 250 Series Models fit between standard 16" O.C. studs with no structural changes needed. Slide-out chassis design facilitates servicing.