difference between knock-down and slip-on frame

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Side Light and Side Panel frames - Side Light and Side Panel frames are not KD (Knock Down), they must be assembled and welded. All side lite and side panel frames must be assembled and welde...
The rough opening dimensions are the same for either Welded (SUA) or Knock Down (KD) frames For F, FN, FE, DE, MU three sided frames and four sided borrowed light frames: New masonry Walls: N...
 For DW, K three sided frames and four sided borrowed light frames: Three sided frame = door opening width (order size) plus 1 1/2" minimum to 2" maximum and the door opening height ...
Knock Down (KD) frames: KD frames are designed, manufactured and supplied with integral miters which include all notches, interlocking corner tabs and slots to allow for field assembly and do not r...
Drywall Slip-on frames are recommended and designed to be installed as KD (Knock Down) assemblies and not recommended to be welded (SUA). If a DW-Series or K-Series is welded prior to installa...
Out of plumb (also referred to as twisted) frames usually cannot be adjusted. "Out of Plumb or Twisted frames (or jambs)" is a condition created by improper wall construction and/or improper insta...
This condition (toed in or toed out jambs) is usually not found until the door is installed. Frames which have toed in or toed out jambs have been installed out of tolerance. It is the resp...
Drywall Slip-on Frame is an industry term describing a 3 sided frame designed to be installed on a wall composed of steel or wood studs with gypsum board or other facing material and is i...
It is the responsibility of the installing contractor to install all material in accordance with SDI or HMMA installation standards and tolerances. Out of square frames which are installed out of t...
DW-Series, K-Series, Drywall Frame; Slip-on Frame
KD, Mitered, Visible Miter; frame assembly