Chain type operator provides locking for awning windows.
Features of the 5 Disc Lockable Chainwinder

Suits aluminium or timber awning windows with butt or hook hinges, or non friction stays
Smooth operation
Through flyscreen operation
Push button to lock, key to unlock
Less than 1 mm between locking points
Maximum opening 300 mm, 19 handle turns to fully open
Can be wound closed when locked
Hooded sash bracket prevents chain being dis-engaged from sash
Zinc diecast Security Sash plate
Standard and one way fixing screws supplied
Retrofits existing MK7 and MK8 Whitco chainwinder models
Foldable knob in handle reduces width preventing damage and interference with blinds
Restricted opening versions available.
Zinc diecast body and mechanism, Passivated Zinc steel base plate and Passivated Zinc steel chain
Corrosion resistant version available with Stainless Steel chain and Stainless Steel base plate
Residential pack available with printed instructions on sealed poly bag
Exceeds the requirements of Australian window lock standard AS4145.3 – 2001 level DW2SW2K1
Restricted opening version can satisfy pool regulation requirements