ROHN AS25GTB Thrust Bearing Shelf with Mounting Hardware for 25G/25AG Tower Section
Made in the USA!
For Mounting and suspending the Mast and Antenna weight off the Antenna Rotor below, Beacon Lights and other Attachments. Drilled to fit the TB3 and TB4 bolt patterns. The plate is not drilled for nor is it designed for use with an Antenna Rotator. Field Drilling may be necessary to accommodate the other aftermarket versions of Thrust Bearings so please verify and compare the bolt hole patterns.

Spec. Sheet
The AS25GTB has a Centered 3" inch hole surrounded by an equidistant bolt pattern comprised of 4 bolt holes (0.56" DIA), 90 degree spaced in circumference around the 3" inch center hole with 5.38" inches across from each other center to center.