Secures nominal sized posts to wood surface for light duty applications. Materials: 18 gauge. Finish G90 galvanizing, D44-TZ and D46R-TZ - G-185 galvanizing. Not recommended for fence posts or other unrestrained (not fixed or fastened at top) applications. These anchors are not designed to resist overturning (moment) loads. While D series post anchors offer some lateral and uplift resistance, they are not recommended as primary means of anchorage for posts in railings. They may be used only for intermediate posts between fully anchored corner / end posts in rail systems.