The 2x4 light duty joist hanger is 1-9/16" W x 3-5/16" H x 1-7/8" B, and the 2x4 rough light duty joist hanger is 2-1/16" W x 3-1/16" H x 1-7/8" B. Page 3 in the [Simpson Strong-Tie Catalog](https://www.diyhomecenter.com/media/pdf/simpson-strong-tie-outdoor-accents-catalog.pdf) is also a great reference to check out.