- Narrow, fully sealed construction
- Oil tempered carbon steel torsion spring
- Zinc plated variable pitch spiral
The Whitco Window Spiral Balance 480 suits timber or aluminium double-hung windows in the 7.25-10kg sash weight range and is supplied with the standard foot attached. It provides smooth, balanced sash movement, with tension adjustable to suit the application, and has shock-absorbing stops.
The balance has a zinc diecast fixing plug and a tough ABS polymer outer casing in black. It is recommended that the balance is supported in a 15mm x 15mm rebate.