Standard Sizes of Doors

Dimensions of doors and windows are measured inside to inside of openings. Door is designated as 8 DS 20 in which D denotes door and S denotes single shutter. The first number indicates the width of opening in module of 100 mm. The last number denotes the height of the opening in module of 100 mm.

As discussed above, 8 DS 20 refers to Door with single shutter of width 800 mm (= 8 × 100) and height 2000 mm (= 20 × 100). Standard sizes of doors as per Indian Standards are shown in Table 20.1.

Table 20.1 Indian standard dimensions of timber door frames

* Doors with two shutters 560 mm each shutter and 20 mm overlap when closed.