Sizing

We produce both made to measure and standard sizes. When ordering, please note that it is customary to allow a fitting clearance of 0 – 8mm on the width and 5 – 10mm on the height of a doorset.

When fitting to steelwork or timber, we normally allow 5mm clearance on the width and 5mm on the height of a doorset. When fitting to masonry, we increase the clearances to 8mm on the width and 8mm on the height, to compensate for slight variations in the structural opening.

In general, clearances should be kept tight on the width for a neat appearance, but on the height, more clearance is advisable to allow for the arc of movement as the doorset pivots towards vertical during installation.

We always advise that actual structural openings are measured after the floor has been laid. Please do not assume that structural openings will be constructed exactly to the size shown on the architect’s drawings.

 
Standard Rebate Frames
  Overall and order size Structural opening Clear opening*
  895 x 2095 900 x 2100 764 x 2016
  935 x 2095 940 x 2100 804 x 2016
Standard single 1000 x 2090 1005 x 2100 869 x 2011
Max 1250 single 1240 x 2970 1245 x 2975 1109 x 2891
Max 1500 single 1490 x 2970 1495 x 2975 1359 x 2891
Standard double 1795 x 2095 1800 x 2100 1658 x 2016
Max 1250 double 2393 x 2970 2398 x 2975 2256 x 2891
Max 1500 double 2893 x 2970 2898 x 2975 2756 x 2891
   
Type 3 Frames
  Overall and order size Structural opening Clear opening*
  895 x 2045 900 x 2050 815 x 1991
  895 x 2095 900 x 2100 815 x 2041
Standard single 995 x 2095 1000 x 2100 915 x 2041
Max 1250 single 1195 x 2445 1200 x 2450 1115 x 2391
Standard double 1795 x 2095 1800 x 2100 1714 x 2041
 
  Preferred standard sizes

* Door open to 90° and no allowance made for protruding lever handles. Contact us to ensure compliance with current Part M requirements or when clear opening dimensions are critical. With a level threshold, the height may be increased by 15mm. 

   
BACK TO MAIN PAGE

Related Case Studies