Gable Decoration size & roof pitch charts

See roof pitch calculation guide at bottom of this page

Gable Decoration Style "A"
Roof Pitch Height Width Angle
4/12 30" 116" 60"
5/12 32" 113" 61"
6/12 34" 110" 62"
7/12 36" 107" 63"
8/12 39" 104" 64"
9/12 42" 100" 65"
10/12 46" 97" 66"
11/12 48" 94" 67"
12/12 50" 91" 68"
Gable Decoration Style "B"
Roof Pitch Height Width Angle
4/12 20" 58" 31"
5/12 20-7/8" 57-5/8" 31-1/2"
6/12 21-7/8" 57" 33-1/2"
7/12 23-7/8" 56" 33"
8/12 26-5/8" 55-1/8" 33-3/4"
9/12 26-1/8" 54-1/4" 34-1/2"
10/12 26-7/8" 51-3/4" 34-3/4"
11/12 26-7/8" 51" 35-1/2"
12/12 28" 48-7/8" 35-3/8"
Gable Decoration Style "C"
Roof Pitch Height Width Angle
4/12 12" 44-1/2" 22-1/2"
5/12 11-7/8" 41-3/4" 22-3/4"
6/12 14-3/8" 41-1/8" 23-1/4"
7/12 14" 40-3/4" 23-1/2"
8/12 15-5/8" 40-1/8" 24-1/2"
9/12 18-1/2" 39-1/4" 24-3/4"
10/12 18-1/2" 38-3/4" 25-3/8"
11/12 18-7/8" 37" 25-3/8"
12/12 21" 37-1/8" 26-5/8"

Gable Decoration Style "D"
Roof Pitch Height Width Angle
4/12 16" 96" 51"
5/12 24" 107" 58"
6/12 24" 93" 52"
7/12 27" 90" 52"
8/12 30" 90" 54"
9/12 34" 90" 56"
10/12 18" 90" 59"
11/12 19" 90" 61"
12/12 20" 78" 55"
Gable Decoration Style "E"
Roof Pitch Height Width Angle
4/12 15" 90" 47"
5/12 19" 90" 49"
6/12 26" 94" 53"
7/12 28" 91" 53"
8/12 32" 90" 53"
9/12 35" 90" 55"
10/12 38" 88" 56"
11/12 41" 90" 61"
12/12 42" 82" 58"
Gable Decoration Style "F"
Roof Pitch Height Width Angle
4/12 15" 90" 47"
5/12 19" 90" 49"
6/12 22" 90" 50"
7/12 26" 90" 52"
8/12 30" 90" 54"
9/12 34" 90" 56"
10/12 38" 90" 59"
11/12 41" 90" 61"
12/12 45" 90" 56"

Gable Decoration Style "G"
Roof Pitch Height Width Angle
4/12 29" 127" 66"
5/12 32" 124" 67"
6/12 35" 121" 68"
7/12 38" 118" 69"
8/12 41" 115" 70"
9/12 45" 113" 71"
10/12 48" 111" 72"
11/12 51" 108" 73"
12/12 54" 106" 74"
Gable Decoration Style "H"
Roof Pitch Height Width Angle
4/12 15" 90" 47"
5/12 19" 90" 49"
6/12 26" 94" 53"
7/12 28" 91" 53"
8/12 32" 90" 55"
9/12 35" 90" 55"
10/12 38" 88" 56"
11/12 41" 90" 61"
12/12 42" 82" 58"
Gable Decoration Style "I"
Roof Pitch Height Width Angle
4/12 31" 58" 31"
5/12 31" 56" 31"
6/12 31" 55" 31"
7/12 31" 53" 31"
8/12 31" 51" 31"
9/12 31" 49" 31"
10/12 31" 47" 31"
11/12 31" 44" 31"
12/12 31" 42" 31"

Gable Decoration Style "J"
Roof Pitch Height Width Angle
4/12 15" 90" 47"
5/12 19" 90" 49"
6/12 22" 90" 50"
7/12 26" 90" 52"
8/12 30" 90" 54"
9/12 34" 90" 56"
10/12 38" 90" 59"
11/12 41" 90" 61"
12/12 45" 90" 63"
Gable Decoration Style "L"
Roof Pitch Height Width Angle
4/12 20" 59" 32"
5/12 21" 58" 32"
6/12 22" 57" 33"
7/12 23" 56" 33"
8/12 24" 55" 34"
9/12 25" 54" 35"
10/12 26" 53" 35"
11/12 27" 52" 36"
12/12 28" 51" 37"


Roof pitch calculator
This diagram shows a 10/12 pitch - 10" vertical rise for every 12" horizontal run.

If you're not sure what the pitch is on your roof, measure 36 inches down the angle on each side of your roof.
Then measure straight across from point to point to get the "A" dimension as shown in the drawing.
Email us at salesinfo@wholesalemillwork.com or call us at 1-800-376-6768 and we can tell you what the pitch is.