WRS Caldwell Series 320 Extended Travel Apex Block & Tackle Window Balance-27″ Length, Stamp 26-6, 26–29.99 lbs, 5/8″ Channel, Non-Tilt Side-Load

WRS Caldwell Series 320 Extended Travel Apex Block & Tackle Window Balance-27″ Length, Stamp 26-6, 26–29.99 lbs, 5/8″ Channel, Non-Tilt Side-Load

ENGINEERED FOR ARCHITECTURAL PRECISION: Series 320 Apex Balance is a specialized, extended-travel window balance hardware solution engineered for both replacement and new installations. Designed for side-load, non-tilt windows with a 5/8″ metal channel, this product measures 27″ in length, stamped 26-6, and supports 26–29.99 lb sashes. Arrives pre-assembled for smooth, precise window movement. CUSTOMIZABLE & DURABLE FOR ANY PROJECT: Built for versatility, the Series 320 adapts to different window designs and sizes, making it ideal for residential, commercial, and institutional applications seeking replacement window balances . Each balance is precision-tested for reliable lift and long-term durability. Crafted from high-strength galvanized steel for corrosion resistance and years of dependable use. SAFE, SMOOTH & ENERGY-EFFICIENT OPERATION: The Apex system’s precision pulley and spring mechanism prevents slamming or sticking, keeping windows steady at any height. Its tight-seal design enhances energy efficiency, reducing drafts and maintaining temperature control in homes, schools, and offices. AVAILABLE IN LENGTHS FROM 8″ TO 60″ (2 TO 53 LB RANGE): The WRS Series 320 Apex family offers a full range of non-tilt, side-load block & tackle balances to fit nearly any sash size. Each balance is precision-tested for consistent lift and long-term performance. Sold individually, with top and bottom guides pre-assembled for convenient, secure installation. 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. Restore Smooth, Reliable Window Performance with the WRS Caldwell Series 320 Apex Extended Travel Block & Tackle Balance Bring your non-tilt, side-load windows back to life with the Caldwell Series 320, engineered for precision, strength, and long-lasting performance. Ideal for both replacements and new installations, this balance system ensures smooth, controlled sash movement with professional-grade durability. The precision spring-and-pulley design prevents slamming or sudden drops, keeping operation steady and safe at any height. When closed, it seals tightly to boost energy efficiency, reduce drafts, and maintain comfort in residential, educational, and commercial spaces. Built from high-strength galvanized steel, the Series 320 resists corrosion and delivers dependable performance through years of use. Each balance comes pre-assembled with top and bottom guides for fast, easy installation—perfect for both pros and DIYers. Key Features: Available lengths: 8″–60″ Supports sash weights: 2–53 lbs Extended-travel design for smoother operation 5/8" channel depth for standard side-load windows Replace both balances for even performance Selection Guide: Measure only the metal channel (exclude plastic ends). Verify 5/8" channel depth. Match stamped number to sash weight (e.g., “07-1” = 8" / 2–2.99 lbs). Note: Balance length = stamped number + 1". Additional Info: Balances 20" or longer may require special handling. Accessories and hardware sold separately. Trusted for over 30 years, WRS Window Repair Systems provides precision-engineered hardware built to keep windows operating safely, smoothly, and efficiently for years to come.