Constructed of UV stabilized ABS the screw mounted deck plate offers an economical alternative to a screw out deck plate. More secure, a screwdriver is required for removal, they are ideal for use in situations where access will be infrequent. Use silicone sealant when installing for easier removal later. Installs with four #10 FH fasteners (not included). Note: Avoid contact with acetone or strong solvents.