- Fully sealed construction
- 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 Window Spiral Balance suits timber or aluminium double-hung windows. Its fully sealed construction pairs an oil-tempered carbon steel torsion spring with a zinc-plated variable-pitch spiral for smooth, balanced sash movement, with tension adjustable to suit the application.
Features:
- Suits timber or aluminium double-hung windows.
- Fully sealed construction with oil-tempered carbon steel torsion spring.
- Zinc-plated variable-pitch spiral with zinc diecast fixing plug.
- Tough ABS polymer outer casing.
- Adjustable spring tension with shock-absorbing stops.