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Type 72 - Stair Tread Support
  Nominal Pipe Size inches lbs
Type A B C D E F G H J Ø
72-8 1 1/2"

7.99 1.54 2.01 6.02 0.79 1.30 0.47 2.76

 

Type 72 is a stair tread support suitable for most types of stair tread, including timber, open steel, and checker plate. Fixing of the treads is by two bolt holes in each fitting.
Warning: If Type 72 fittings are to be used for a permanent application or subjected to high loads, the stair tread support tube which is located at its ends with a single grub screw, should be drilled and pinned to avoid rotational slip.
Ø indicates diameter of fixing holes.

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