WRS Series 37 Quicktilt Tandem Coil Spring Window Balance - 18 (35-36.99 Lbs, Dual Coil) - Constant Force Design With Pre-Assembled Pivot Shoe For

WRS Caldwell Series 300 Block & Tackle Window Balance - 5/8" Channel, 28" Length, Stamp 27-4 (20-26 Lbs), Non-Tilt Side-Load Replacement Hardware -

Custom Window Screen Replacement - Fully Assembled Double Hung Half Screen. The DH4 Utilizes Two Leaf Springs To Help Secure The Screen In Your Window

Custom Window Screen Replacement - Fully Assembled Double Hung Full Screen. The DH8 Utilizes Two Leaf Springs To Help Secure The Screen In Your Window