To measure the storm door simply measure the door itself, Width and Height. (If the door is missing measure the inside of the existing frame).
Standard Mounting Frame (U-shaped)
You then add an inch to each side and an inch to the top. For example:
32" wide (add 1" to each side = 34" door)
75" high (add 1" to the top = 76" door)
This would be a 34" x 76" door
You should then be able to locate your door size on the door chart.
Residential (Flush) Mount Frame (L-shaped) Measure the inside dimensions of the brickmold. Add 2 inches. This is the call size for the width. Measure the inside height dimension of the brickmold all the way to the bottom of the brickmold. Add 1/8". This is the call size of the height of the storm door.
Ref Chart | |
DOOR (only) Measures: |
Call Size: |
30" x 71" | 32" x 72" |
30" x 73" | 32" x 74" |
30" x 75" | 32" x 76" |
30" x 77" | 32" x 78" |
30" x 79" | 32" x 80" |
32" x 75" | 34" x 76" |
32" x 77" | 34" x 78" |
32" x 79" | 34" x 80" |
32" x 81" | 34" x 82" |
34" x 71" | 36" x 72" |
34" x 75" | 36" x 76" |
34" x 77" | 36" x 78" |
34" x 79" | 36" x 80" |
36" x 75" | 38" x 76" |
36" x 79" | 38" x 80" |
36" x 81" | 38" x 82" |