Quick-mount porch post fastener, provides ventilating moisture barrier between post and ground. Securely fastens to top and bottom of post in seconds. Provides a ventilating moisture barrier between post and ground Securely fastens top and bottom of post in seconds Prevents water damage, increasing life of post by years Fits 4-in nominal (3-3/8-in x 3-3/8-in) porch post Easy installation with common woodworking tools Size - Measurement (Inches): 3.4 Material: Polymer Part Name: Fastener Kit Use: Interior/Exterior CA Residents: Prop 65 Warning(s): No UNSPSC: 30161900