The H-Frame Crossarm Yoke is similar to the Tower Yoke in design andapplication. The two clamp bolts which secure the yoke to the doubleplank crossarms may be adjusted to three center-to-center positions (9",11" and 13") to fit various arm sizes; vertical take-up on the crossarmis from 9" to 12". The swiveling trunnion brackets are located 26"center-to-center.