Spring Window Lock F2538, Window Sash Spring for Prime-Line, Sash Lock Shim

This 4-pack of wood window sash tension springs helps repair older single-hung and double-hung windows with worn or damaged sash components. Designed for side-jamb installation, these window repair springs apply steady pressure to support the sash, reduce rattling, and improve smooth operation. Made from durable zinc-plated spring steel, these window balance springs provide corrosion resistance and consistent tension through repeated use. The side-mount design supports straightforward installation during sash repair. Light tapping with a hammer may be required for proper seating. Suitable for traditional wood window jambs, this set helps replace worn sash springs without replacing the entire window system. Product Specifications: Quantity: 4 Pack Material: Zinc-Plated Spring Steel Color: Silver Dimensions: 5.95 x 1.22 inches Use: Wood single-hung and double-hung window sash repair Compatible With: Prime-Line F2538 style sash tension springs Package Includes: 4 x Window Sash Tension Springs + 8 Screws Included

• 【Restore Old Window Function】Ideal for older single-hung and double-hung wood windows, this window sash spring replaces worn hardware to restore sash support, deliver steady pressure, and improve smooth operation during routine repairs
• 【Durable Zinc-Plated Spring Steel】Constructed from durable spring steel with a zinc-plated finish, this window repair spring provides corrosion resistance and maintains consistent tension through repeated use for reliable sash support
• 【Stable Sash Stop Performance】Works as a consistent sash stop and window sash balance spring, delivering steady tension to hold the sash in position and reduce rattling. The long-strip contact provides even friction for large wood sashes
• 【Easy Side-Mount Installation】Designed for side-mount installation on window jambs, this window sash spring replacement uses pre-made mounting holes for straightforward repair. Light tapping with a hammer may be needed for proper seating
• 【Practical Repair Solution】Designed for aging wood-frame windows, this double hung window spring helps replace worn sash components and supports routine maintenance. This 4-pack includes 4 springs and 8 screws for repair projects