Standard Frames with Unequal Rabbets for Masonry, Wood or Metal Stud Walls Series SU frames have precision die-cut corners with positive locking tabs to assure rigid assembly connections. Available from stock in hundreds of profiles and dimensions in either knock-down or set-up & welded. For masonry, wood or metal studs wall, installed either to cap or butt the wall. Three or four piece door frames, Borrowed Lites, Side Lites, or Transom Frames. In-stock frame depths: 4-3/4", 5-3/4", 6-3/4", 7-3/4", 8-3/4"In non-stock sizes from 4-5/8" thru 14" depths. Unequal rabbets 16 and 14 gage steel (14 gage optional) Available Knock-Down or Set-up and Welded. Fire label Up to three hours(UL10B, UL10C and UBC 7-2 '97) Underwriters Laboratories(Applied or Embossed) Warnock Hersey (Applied or Embossed) Factory Mutual(Applied only)Up to four hours BS476 Part 22Hinge preparations: ANSI A156.7, 4-1/2". Strike preparations: ANSI 4-7/8" universal A115.1 and 2Series SU frame components are unequal rabbet.
