Straight Length [SL]
 
Width
W
Basic
No.
Length
(ft.)
Rung
Spacing
-6 SL -10 -4
-9 -12 -6
-12 -20 -9
-18 -24 -12
-24 -18
-30
-36
Example: 1B4A-06SL-12-09 is a 4" load depth aluminum Hat with a 13/16" flange, 6" wide, 12 Ft. long, with 9" rung spacing.

Conversion English 6" 9" 12" 18" 24" 30" 36"
to Metric (mm) 152 229 305 457 610 762 914
Conversion English 12 Ft. 24 Ft. 10 Ft. 20 Ft.
to Metric (mm) 3.7m 7.3m 3m 6m

  • Solid Rungs provided for all lengths