- Narrow, fully sealed construction
- Corrosion resistant stainless steel sash foot plate
- Made in Australia
The Whitco Window Spiral Balance 510 suits timber or aluminium double-hung windows in the 7.25-10kg sash weight range and is supplied without a foot; order the matching foot separately. It 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, 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.