Our innovative Multi-Configurable sash pulleys. Made with a Patent Pending housing that accepts our round or square faceplates, or your custom faceplate! (additional charges) Supplied with a 2 12" brass ball-bearing pulley wheel. Configuration for sash chain or rope. Also available our new economy versions with chain pulley wheels, prefinished Zinc faceplates in Polished Chrome, Brushed Chrome. and PVD Brass.