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, if possible 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

Standard double    1795 x 2095    1800 x 2100    1658 x 2016

Max 1250 double    2393 x 2970    2398 x 2975    2256 x 2891

 
Type 3 Frames

     Overall and order size    Structural opening    Clear opening*

     895 x 2045    900 x 2050    815 x 1996

     895 x 2095    900 x 2100    815 x 2046

     995 x 2095    1000 x 2100    915 x 2046

Double    1795 x 2095    1800 x 2100    1714 x 2046

* 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.

     Preferred standard sizes