Simpson MIU5.12/9 Face-Mount I-Joist Hanger 5x9-1/2 PACK:1 Ea 5 is constructed from 3

5 is constructed from 3 Gauge Steel and comes with no coating applied

and how hard is it

The frame is composed of 2 solid steel plates electro-welded to a heavy base

What does "SUL" mean in the product name

Black Powder Coat is a heavy precut strap tie from Simpson's Classic Collection

Simpson MIU5.12/9 Face-Mount I-Joist Hanger 5x9-1/2 PACK:1 Ea 5 is constructed from 3Simpson MIU5. 12 9 Face Mount I Joist Hanger 5x9 1 2 by Simpson Strong Tie is a heavy duty face mount connector engineered for commercial, high load, and double I joist applications. Designed to support 5 in. x 9 1 2 in. joist sizes without requiring web stiffeners in standard use, this hanger delivers exceptional load capacity and installation efficiency through its positive angle nailing (PAN) design and integrated speed prongs. Key Features