Manufacturing Tolerances for Frames

Frames for single door or pair of doors

  • Width, measured between rabbets at the head; nominal opening width +1/18” – 1/32”
  • Height (total length of jamb rabbet): nominal opening height +/- 3/64”
  • Frames overlapping walls to have throat dimension 1/8” greater than dimensioned wall thickness to accommodate irregularities in wall construction