CLASS “A” LABEL
- division of fire walls, 3 hour rating.
CLASS “B” LABEL
- enclosures to vertical shafts, 1 1/2 hour rating.
CLASS “C” LABEL
- openings in corridors or partitions, 3/4 hour rating.
CLASS “D” LABEL
- exterior walls, severe exposure, 1 1/2 hour rating.

UNDERWRITERS OVERSIZED CERTIFICATE - an underwriters certificate of factory inspection is furnished on all Mahon doors exceeding 120 sq. ft. in door area. This certificate certifies that the door was made in compliance with Underwriters Laboratories, Inc. requirements.

U.L. LISTED EXPANSION SHIELDS - where required, Mahon can now furnish listed expansion shields for use on concrete jambs, also complies with NFPA 80 standards for fire doors and windows.

U.L. LISTED MOTORS - when specified, Mahon can supply listed operators along with many optional electrical control devices. Ease of door operation makes motor operation a desireable option.

Please contact our office for additional information. 888-557-1515