Thread: Security Screen Measurement..having a grey moment

Because it usually goes on the outside, which is the narrow part of the jamb set, usually is about 795 or so opening, more if there’s architrave on the outside. But, there usually is a quite big gap on most of them, not sure why.
the only time you would want an 820 one is if you had a double rebated jamb set, with a 35 or 42 mm rebate on the inside, and a 20 mm rebate on the outside for the screeen, but it needs to be a wide jamb so that the door furniture (locks and handles) don’t clash together.

I am replacing an old metal door frame with timber so my door jambs are a constant 38mm thick and are not rebated to be narrower on the outside.

Should have planned that a little better as I did have to reduce the original thickness of the timber from 42mm so instead of reducing the thickness overall with the thicknesser to achieve the required 826 gap width for the door, I should have just rebated the door jamb on the door side and kept the 42mm thickness on the outside for the security screen.....too late now, I will find a work around.

As it is, I may have the get the security screen measured and made to order as the original metal frame did not have a door sill and I have added a sill which has reduced the door height to a non standard 2022 instead of 2040.

Lessons learnt.