Measure door top middle and bottom on width between brick work opening. Take the smallest size of the three and then
we recommend that you deduct 10mm from this size to allow for ease of installation.

Measure door left and right from top to bottom on height between lintel and brick/stone threshold. Take the smallest
size of the three and then We recommend that you deduct 10mm from this size to allow for ease of installation.


These are our recommmendations, however, you must satisfy yourself that this meets your criteria as we cannot be held responsible for any mistakes made

Using our interactive pricing software we allow you to input a maximum and minimum height. This varies depending on whether you are choosing a sill or not.

Please take a note of the Door Sizes box when placing your order.

No Sill

If your door does not require a sill then make sure your inputed size falls between the maximum or minimum size of PVC no sill section (Marked with Blue Outline). And also make sure you select the no sill option.

With Sill

If your door requires a sill then make sure your inputed size falls between the maximum or minimum size of PVC with sill section (Marked with Orange Outline). And also make sure you select the with sill option. (85mm or 150mm).

Please check that your door will not be fowled by your finished floor when open

Please note that Low Threshold is a low threshold. There is 7mm clearance from bottom of door, this wouldn't even give you clearance for a doormat.

15mm Packers are recommended for plaster line. This is because an average plaster thickness in a house is 10-20mm thick, if a packer wasn't used it would result in hinges being tight up against the plaster.