A hollow structural section curtain wall mullion ties into a two-hour fire-rated partition following Underwriters Laboratories design U419. The assembly incorporates two-by-four metal framing wrapped with a laminated metal finish and a continuous one-half-inch glued laminated timber cap. Mineral wool insulation packs the joint alongside sealant and a backer rod, meeting a two-hour fire-rated interior glazing system.
2 HOUR RATED PARTITION - UL DES U419 HSS CURTAIN WALL MULLION 2 HR FIRE RATED INTERIOR GLAZING SYSTEM MINERAL WOOL SEALANT AND BACKER ROD 1/2" CONTINUOUS GLULAM CAP LAMINATED METAL WRAP 2x4 METAL FRAMING STAIR 1
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