This spiral window balance is designed for controlled vertical sash movement using a combined Aluminum tube with Aluminum finish and steel rod structure. The 29" tube length houses the internal spiral mechanism, while the 29-5/8" rod provides the required extension range for sash attachment. The 3/8" diameter defines the balance s placement within the track, allowing it to fit into channels sized for this profile. Designed to support window sashes weighing up to 22 lbs, the balance includes a red bearing that assists in reducing friction during sash movement. During operation, the steel rod rotates within the tube to regulate tension, helping maintain smooth sash travel without abrupt shifts in movement. The Aluminum finish offers a uniform appearance throughout the interior of the channel once installed. This balance functions as part of the counterbalance assembly, supporting load distribution as the sash is raised or lowered. This configuration supports consistent alignment and operation within systems sized for its specific tube, rod, and diameter measurements.