Simpson DSD25300 1/4" X 3" Duplex Head Split-Drive Anchor - Zinc, Pkg 100 Deck Post Caps Rim joist models are designed

Rim joist models are designed to fit up to a 17" clear span without any loss of strap nailing while still providing all the benefits of the STHD model

and tighten for a secure

Strong-Drive TB Wood-To-Steel Screws

Precise depth adjustment prevents over and under driving

Flexible design: Roofjack size accommodates pipes from 1/4" - 2-1/2"

Simpson DSD25300 1/4" X 3" Duplex Head Split-Drive Anchor - Zinc, Pkg 100 Deck Post Caps Rim joist models are designedThe Split Drive anchor is a one piece expansion anchor that can be installed in concrete, grout filled block and stone. As the anchor is driven in, the split type expansion mechanism on the working end compresses and exerts force against the walls of the hole. The Duplex head allows for easy deconstruction while providing ample support by attaching wood or light gauge steel to concrete and grout filled block surfaces. Installation: For Common Rafters: