measuring a screen door

by dottie
(grande prairie ab)

My house is missing the sliding screen door i want to replace it with a new one how do i figure out the size since i dont have the old one to measure?

Most patio doors have a screen door channel at the top and a track at the bottom. Some types have both a track at the top and at the bottom.

For the first kind measure from the top of the channel, to the top of the bottom track. Subtract a 1/4". Thats the height of the new screen door.

For the second type measure from the bottom of the top track to top of the bottom track. Add 1/4". Thats the height of the screen door.

The width of the screen door is usually the same as one of the sliding glass panels.