Window balance decision guide

Window balance shoe replacement: identify the pivot shoe and mating system

A balance shoe or pivot-lock shoe works as part of a mating system. Measure the shoe and identify what it mates with before treating a similar-looking replacement as compatible.

How to identify a balance shoeRecord width and thickness first, then confirm profile, cam or slot geometry and the mating balance system. Appearance alone is not enough.

Identification and fit check

First identify the hardware family, then collect the measurements that affect fit. A likely family is not the same as a confirmed replacement.

JavaScript is off. Use the static guidance below to identify the hardware family and record measurements. No computed fit result is available without the selector. Use the static measurement guidance on this page instead.

Opening and visible hardwareOpening typeOperation typeVisible hardware formTilt stateObserved stamp or marking (optional)

Channel measurementsChannel length

Enter the observed value. No tolerance is assumed.Channel width

Enter the observed value. No tolerance is assumed.Channel depth

Enter the observed value. No tolerance is assumed.Bottom guide / terminalPivot relationship

Spiral measurements and safetyTube length

Enter the observed value. No tolerance is assumed.Rod length (when applicable)

Enter the observed value. No tolerance is assumed.Tube diameter

Enter the observed value. No tolerance is assumed.Rod / end configurationTip / bushing / bearing colorHandling safety status

Pivot shoe / pivot hardware measurementsPivot shoe width

Enter the observed value. No tolerance is assumed.Pivot shoe thickness

Enter the observed value. No tolerance is assumed.Pivot shoe profileCam / slot descriptorMating balance system

What you likely have

A pivot or balance shoe usually connects sash pivot hardware to a balance system. Family identification helps narrow the search, but it does not confirm the exact shoe.

Balance shoe measurement checklist

Record shoe width and thickness with units.
Describe the shoe profile and cam/slot geometry from direct observation.
Identify the mating balance system: channel, spiral, coil, or other.
Compare the mating pivot relationship; do not rely on front-view appearance alone.
Stop exact-fit reasoning if a fit-critical relationship is unknown or contradictory.

No default dimensional tolerance and no silent shoe-to-SKU inference is assumed.

Why similar-looking shoes can still differ

Small differences in thickness, cam shape, profile or mating hardware can change fit. Treat a visual match as a clue that must be confirmed by measurements and system context.

Before you shop

When the shoe family and mating system are supported, category-level merchant routing can be appropriate. Exact-product routing remains disabled until stronger rights-cleared fit evidence is available.

Not sure it is a balance shoe?

Return to the identification guide.