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02/04/2019 4:12 am
Any one with insight on how the majors keep the fire rating of the entrance frames with the access doors for the control components of MRL's?
23/04/2019 9:00 am
The covers meets the 14 ga. thickness required for a fire rating. The frames had to be relisted to include the openings before they put them in the field. The are not modifying an existing frame so to speak.