Dual "H" Perimeter SealsThis door is equipped with our patented dual Super "H" door sealing system. It consists of a dual compression type perimeter seal. Compression seals typically offer higher acoustical ratings. The seal is composed of a felt/neoprene combination that forms a tight perimeter seal. Dual compression seals are used on our highest rated acoustical doors.
Isolated Edge ConstructionThis door uses an Isolated Edge construction, which separates the two outer door skins from each other. A strip of neoprene is installed between the two door skins, reducing the amount of sound transmission through the actual steel faces. The seal is notched between the hinge and lock cutouts and does not interfere with hardware cuts.
Super "H" Door BottomOverly's super "H" door bottom is the only choice for unbeatable sound control. Always used in conjunction with our cam-lift hinges, this door bottom compresses tightly against the floor. We recommend smooth level sealing surfaces for this door bottom. Uneven or abrasive flooring may prematurely wear the door bottom. A smooth raised threshold is recommended when using this door bottom.
UL Fire RatingsIn addition to acoustical testing, Overly has successfully tested this product to the latest UL fire test standard UL10C/UBC 7-2 (positive pressure).