Designed for sideload sash applications, this block and tackle balance is ideal for both residential and commercial windows. AAMA verified with a Class 2 rating, it meets the North American Fenestration Standard (NAFS) for quality and performance. Engineered for easy installation, it allows quick sash insertion and removal. Note: Sold per piece.

The 13" channel length can be identified by ID stamps such as 12-40, 12-4, or 12-D.

Part #: 17B12-40
SKU: 50419595
Brand: FRAMELESS HARDWARE