x-ray seals at perimeter

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Steelcraft have tested different types of doors and frame assemblies using Zero International gasket seals for the various STC ratings. Tests are in accordance to ASTM...
Frames can be installed either KD (knock down) or welded to receive the STC rating.
Steelcraft borrowed light frames are not listed/tested. Check with the glass manufacture if they are listed and with what type of framing used.
Sound seals are required. Zero International Gasket Notes: Perimeter Seals – Zero #475 applies to the stop of the head and jambs. Door bottom – Zero #367, surface applied. Threshold ...
Lead lined frames are intended for use in the X-ray Room locations in Health Care facilities. Frames are provided by Steelcraft prepped as follows:  Frames are supplied knock-down (KD). Fram...
Lead lining is not needed, since the channel or through bolt is solid and the x-rays will not penetrate the solid metal.