985 Series Tandem 3/4" Constant Force Coil Balance, 5.5–9.5 lbs for Vinyl Windows

Regular price
$18.95
Regular price
Sale price
$18.95

Vendor: Amesbury Truth Hardware

Product Type: Hardware

Sku: 533072-5.5/5.5

Pre-assembled 985 Series constant force coil balance features a 3/4" (19.1mm) wide interlocking spring and fits vinyl windows with a 1-1/4" (31.8mm) wide by 3/4" (19.1mm) deep pocket. The tandem assembly supports sash weights from 5.5 to 9.5 lbs and uses a side locking spring clip brake; verify weight code stamped on the spring for matching.

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985 Series Tandem 3/4" Constant Force Coil Balance for Vinyl Windows (Weight: 5.5 - 9.5 lbs)

This pre-assembled 985 Series Centurion constant force coil balance assembly is designed with a 3/4" (19.1mm) wide interlocking coil spring, making it suitable for vinyl single hung or double hung windows with a standard 1-1/4" (32mm) wide by 3/4" (19.1mm) deep pocket. The tandem (double-coil) configuration provides balanced and consistent window operation for sashes weighing between 5.5 lbs and 9.5 lbs (2.5kg - 4.3kg).

The universal single coil balance features a metal spring clip side locking brake for secure installation. Interlocking coil springs allow the use of single, double, triple, or quad assemblies to match various sash weight requirements, increasing flexibility during repairs or replacements. Tandem assemblies like this one are commonly used to restore smooth and reliable function to vinyl windows with worn or broken balances.

Technical Information

  • Pocket Width: 1-1/4" (32mm)
  • Pocket Depth: 3/4" (19.1mm)
  • Window Travel: 40" (1016mm)
  • Number of Coils: 2 (Tandem)
  • Brake: Side locking spring clip
  • Weight Range: 5.5 – 9.5 lbs (2.5kg – 4.3kg)

Notes

  • Check the weight code stamped on the spring to ensure correct replacement match.
  • This balance system is intended for vinyl window sashes only.
  • Uses the Centurion interlocking coil system for various weight configurations.

Sold individually. Please verify all measurements and match the weight code stamped on your original spring to ensure correct fit and operation. Always measure your existing window hardware carefully before ordering replacements.

Shipping Rates (Contiguous U.S.):

  • USPS First Class: $11.95 (5–10 business days)
  • USPS Priority Mail: $12.95 (3–6 business days)
  • UPS Ground: $17.50 (2–5 business days)

Prices apply to most orders under 4 lbs. Heavier or bulky items may cost more. We'll always contact you for approval before adjusting shipping costs. We'll also contact you regarding shipping delays, if they occur. Need shipping to Alaska or Hawaii? Call us for a UPS quote.

Packaging & Materials

  • We reuse clean packing materials when possible to reduce waste.
  • Items may be shipped in plain or recycled boxes.
  • Most hardware comes in bulk and may not have retail packaging.
  • All items are brand new unless otherwise noted.

The TruthParts Promise

We carefully inspect all parts before shipping and add extra protection when needed. If you receive an item you didn't purchase, or if something arrives broken or blemished, we’ll repair or replace it — no hassle.

Note: Shipping fees are non-refundable.

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