1. Measure your existing door height, width and thickness.
2. Check that the door is square by measuring the door frame diagonally. If the frame is out of square, you may have to order a slightly larger door and trim it to size. A trimming allowance of up to 5mm is allowed on most doors.
3. Keep in mind that approximately 3mm clearance is required for the top and sides of the door and 5mm for the bottom, above the floor covering.
Tip: Convert Imperial to Metric by multiplying inches by 25.4. For example: 6' 8'' = 80" x 25.4 = 2032mm
Step 1
Step 2
Step 3
Common Doors Sizes
Entrance Doors 2040 x 820 x 40mm
Sidelights 2040 x 400 x 40mm
Transoms 400 x 1800 x 40mm
Internal Doors 2040 x 820/770/720/620/520 x 35mm
Measurement Conversion
To convert Metric to Imperial, divide by 25.4 Example: 50.8mm
divide 25.4 = 2"
To convert Imperial to Metric, multiply by 25.4 Example: 2" x
25.4 = 50.8mm