- Oil tempered carbon steel torsion spring and zinc plated variable pitch spiral
- Fully sealed construction, weight range: 7.25 - 10kg
- Steel zinc diecast fixing plug and tough ABS polymer outer casing
Whitco Spiral Balances have been designed to suit both aluminium and timber frame double hung windows. This item is designed to assist in the smooth sliding operation of both top and bottom window panels. Corrosion resistant stainless steel sash foot plate and adjustable spring tension to suit application.