F44447 Clamp, Upper Side Screen Fits Case 850, 850B, 850C, 850D, 850E, 850G, 855One New Aftermarket Replacement Upper Side Screen Clamp Fits Case Crawler Dozers This upper side screen clamp secures the upper side brush screen panel to the operator's station on Fits Case crawler dozers. PVE style brush screens and their hardware including clamps like this one protect the operator and machine when working in forested or brushy environments. The clamp holds the screen firmly in place at the upper attachment point on the side of the