Above Ground Window Sizes

Standard Sizes (nominal)

8"x8"
Block
  8" 16" 24" 32" 40" 48" 56" 64" 72" 80"
8"
16"
24"
32"
40"  
48"    
56"      
64"        
72"          
80"            

Optional NAMI Certified:
Windows made with 8"x 8" block have been tested to meet NAMI Certification for
design pressure of +/- 55 psf except those marked as in the above table
Specify if optional certified windows are required.

Rough Opening Requirements:

Nominal width or height Rough opening required
8" 9-3/4"
16" 17-1/2"
24" 25-1/4"
32" 33"
40" 40-3/4"
48" 48-1/2"
56" 56-1/4"
64" 64"
72" 71-3/4"
80" 79-1/2"

Optional Sizes (nominal)

6"x6"
Block
  12" 18" 24" 30" 36" 42" 48" 54" 60"
12"
18"
24"
30"
36"
42"
48"
54"  
60"    

Rough Opening Requirements:

Nominal width or height Rough opening required
12" 13-1/2""
18" 19-1/4"
24" 25"
30" 30-3/4"
36" 36-1/2"
42" 42-1/4"
48" 48"
54" 53-3/4"
60" 59-1/2"

Custom sizes and shapes available - contact us for information