- Fully sealed construction, weight range: 10 - 14kg
- Oil tempered carbon steel torsion spring and zinc plated variable pitch spiral
- Steel zinc diecast fixing plug and tough ABS polymer outer casing
"The 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.