Viking T21GB80 Worm Gearbox for T21 multi-tenant-intercom the SP20W12V offers the durability

the SP20W12V offers the durability and performance needed to keep your gate running smoothly

K1D6761-1CC

For easy maintenance

The DoorKing 1804-155 Keypad Kit is a reliable replacement designed for DoorKing 1800 Series telephone entry systems

Housing: Steel cover

Viking T21GB80 Worm Gearbox for T21 multi-tenant-intercom the SP20W12V offers the durabilityWorm Gear Gearbox for Swing Gate Operator Drive Systems The Viking T21GB80 Gearbox is a worm gear drive assembly used in Viking T21 first generation swing gate operators. This gearbox transfers motor output into controlled operator movement, helping maintain predictable gate travel and consistent holding force at secured perimeter entry points. Replacing a worn gearbox helps restore smooth, dependable operation and reduces stress on the operator