How to measure your door so you know what Kit you need (28mm or 35mm)
Determine if your door has embossed panel designs or not. Then measure the panel depth to determine which size product will suit your door.
OPTION 1 : 28MM PANEL
Embossed panel design doors have a smaller depth for the product to sit, you will need to allow for it. This can be done by placing a ruler vertically against the protruding design and measure as shown in the photo (right); it should suit the 28mm product.
OPTION 2 : 35MM PANEL
Flat panel design doors generally have a deeper depth, measure this from the back of the panel to the front of the profile. This should suit the 35mm product.
