Measure a Patio Screen Sliding Door

Measurements of actual door, (if possible): _____ x ______
Jamb to style end dimension: _____
For type "T" header:
Clear opening dimension "A" _____ (to nearest 1/8")
For type "U" header:
Clear opening dimension "B" _____ (to nearest 1/8")
"A" + 1/4" = Door Height
"B" - 1/8" = Door Height

tape measure

This graphic shows how to read a standard measuring tape. The small numbers at the bottom refer to sixteenth of an inch. This example's measurement is written as 5-1/16"