Upper Mounting Bracket for Trim Tab Actuator with Gland Seal by Lenco(R). Vandar - 3 screw, 1 wire. Standard Upper Mounting Bracket with Gland Seal. Lenco Marine is the true industry leader in the marine and boating world - manufacturing not only trim tabs but also electric actuators, hatch lifts, switches and the all new Auto Glide boat leveling system.