WRS Series 37 QuickTilt Coil Spring Window Balance – #8 Left Hand (15–16.99 lbs, Single Coil) – Constant Force Design with Pre-Assembled Pivot Shoe for Tilt Windows – Balance Support Window Hardware

WRS Series 37 QuickTilt Coil Spring Window Balance – #8 Left Hand (15–16.99 lbs, Single Coil) – Constant Force Design with Pre-Assembled Pivot Shoe for Tilt Windows – Balance Support Window Hardware

• LIGHTWEIGHT SINGLE-COIL DESIGN: Engineered for tilt-style single-hung and double-hung windows, the WRS Series 37 QuickTilt Single Coil delivers precise counterbalance and smooth sash control for lighter sashes. This product features a #8 Left Hand coil rating and supports 15–16.99 lb sashes. The compact constant-force coil delivers quiet, friction-free lift—ideal for standard residential windows requiring dependable, effortless operation. Right-hand balance sold separately.
• CONSTANT FORCE SPRING TECHNOLOGY: This coil spring balance uses a constant-force mechanism that maintains steady tension throughout sash travel—no pulleys or cords to wear out. The result is smooth, consistent window operation and extended component lifespan.
• DURABLE AAMA CLASS 3 QUALITY: Built from galvanized steel for corrosion resistance and long-term strength, each QuickTilt balance is AAMA Class 3 verified and precision-tested through thousands of open-close cycles. Coil housing measures 1-9/32″ wide with a 17/32″ coil spring for a precise, reliable fit.
• PRE-ASSEMBLED FOR EASY INSTALLATION: Arrives ready to install with the coil and pivot shoe pre-assembled, fitting directly into standard tilt window tracks. Designed for DIY or professional repairs, it offers fast, accurate setup and long-term dependability.
• TRUSTED SINCE 1989: WRS Window Repair Systems has over 30 years of experience supplying reliable, high-quality hardware. Trusted nationwide by homeowners, contractors, schools, and property managers for dependable repairs and long-lasting performance.