PACO CORPORATION Phone : (708) 430-2424 9945 S . Indus t r i a l D r i ve Fax : (708) 430-0056 B r idgev iew, IL 60455 sa les@pacogra t ing .com U .S .A . www.PacoGra t ing .com

Stair Treads Span

Width

Checker Plate Nosing Recommended Maximum Span (Steel) Recommended Maximum Span (Aluminum)

End Plates 2 1/2”

2 1/2" end plates are used for grating up to 1 1/4" high. 3” end plates are used for grating 1 1/2" high. The center line of the punching is always 3/4" from the bottom of the plate. The hole is 7/16” diameter and the slot is 7/16” x 7/8”.

“A” 1 1/8”

1 3/4”

Bar Size Smooth Serrated Bar Size Smooth Serrated

3/4” x 3/16” 2’ – 4” - 3/4” x 3/16” - - 1” x 3/16” 3’ – 5” 2’ – 10” 1” x 3/16” 2’ – 4” -

1 1/4” x 3/16” 4’ – 8” 4’ – 2” 1 1/4” x 3/16” 2’ – 10” 2’ – 7” 1 1/2” x 3/16” 5’ – 6” 5’ – 3” 1 1/2” x 3/16” 3’ – 6” 3’ – 2" 1 3/4” x 3/16” - - 1 3/4” x 3/16” 4’ – 3” 3’ – 10”

Tread Width “A” Dimension

6 5/16” 2 1/2" 7 1/2" 4 1/2"

8 11/16” 4 1/2" 9 7/8" 7”

11 1/16” 7” 12 1/4” 7”