Expanded Grating Stair Treads - Standard Unitread®

Expanded Metal stair treads are economical, have excellent load characteristics, and feature a slip-resistance surface.


End View of Stair Tread
The stair treads are cut from our expanded metal stock, and our qualified McNICHOLS® service specialists weld the expanded metal to a stair tread frame. The diagram to the right shows the end view of a stair tread and its dimensions.
Expanded Metal Stair Tread Details
The table below provides details for expanded metal stair treads. The dimension ?A? is illustrated in the end view of the stair tread show above.
Unitread
Style
Width
?A?
Total Pounds
Height
1/4 Inch Deflection
Safe Load
#4
8?1/2 x 24
4?1/2
10.7
1000 pounds
#4
8?1/2 x 30
4?1/2
12.9
925 pounds
#5
9?3/4 x 30
16.2
2?1/8
950 pounds