Prime Line H3578 Sash Balance 6# Sheet Metal High speed steel teeth are

High speed steel teeth are reinforced to cut stronger

Features include a frost free damper system

Electrical receptacle with 2-pole/3-wire grounding for surface mounting

Scaling chisel bit with two 60 cutting angles to clean concrete

Die cast zinc with rectangular cover and porcelain sockets

Prime Line H3578 Sash Balance 6# Sheet Metal High speed steel teeth are"PRIME LINE" SASH BALANCE Requires no adjustment Size: 6 Lb. Weather stripped Handles both upper & lower sash Face plate fits flush in window frame Spring mechanism enclosed in rust proof cast: 3 4" thick Should be mounted 2" above center line of window frame Light weight windows require one, while heavier windows require two Box