Simpson Double 4 x 14 Face-Mount Joist Hanger, Galvanized HU414-2 EPCZ End Post Cap What type of backerboards are

What type of backerboards are these screws compatible with

What gauge steel is used in the ECC7 1/8-4

5HDG come with the necessary fasteners included

and what screws are used for framing attachment

The CCQ series is designed to accommodate a 7 in

Simpson Double 4 x 14 Face-Mount Joist Hanger, Galvanized HU414-2 EPCZ End Post Cap What type of backerboards areThe Simpson HU414 2 HU Galvanized Face Mount Joist Hanger for Double 4x14 is a heavy duty structural connector engineered by Simpson Strong Tie for applications requiring additional strength and safety factors. Designed to face mount to the header, this hanger provides a reliable connection for double 4x14 joist members and is the trusted choice of engineers and contractors for both residential and commercial construction projects. Key Features "U"