Window Winder Surfmist® | Left Hand | Lockable – Keyed Alike | 150mm Restricted Chain

Ordering more than one? They’re all keyed alike. Every lockable TradeBase winder in your order is supplied keyed alike — one key opens them all, so you’re not juggling a different key for every window.

Designed to work seamlessly with both timber and aluminium window systems, this Surfmist® restricted window chain winder by TradeBase offers smooth functionality, reliable keyed locking, and a low-profile design that suits light and neutral colour schemes — with the chain restriction set to 150mm.

Key Features

• COLORBOND® Surfmist® finish — matches Surfmist® and light powder-coated window frames and hardware
• Folding handle — folds flat to sit neatly behind blinds, curtains and furnishings, then swings out for easy winding
• Anti-sag, self-tensioning chain — the self-tensioning design keeps the chain taut, preventing sag and wind-shudder rattle
• Versatile Compatibility: Suitable for timber and aluminium awning and casement windows with butt or hook hinges or non-friction stays.
• Easy Operation:
  • Smooth, reliable operation with a folding ergonomic handle
  • Convenient through-flyscreen operation
• Secure and Restricted:
  • Zinc-plated steel chain
  • Stainless steel fixing screws included
  • Screwdriver-set 150mm chain restriction — the restriction is set on the base of the winder; once the winder is installed and screwed down there is no switch or adjustment, so it cannot be accessed or altered
  • 150mm restricted opening — lets fresh air in while keeping the opening narrow, adding a layer of security and deterrence when you leave windows open. Like any window restrictor, it’s a deterrent rather than a guarantee against forced entry.
  • Need NCC fall-prevention or pool-barrier compliance? Those require a 100mm maximum opening — see our 100mm restricted winders.
• Built to Last:
  • Robust diecast zinc body and mechanism for durability
  • Mild steel zinc-plated chain for everyday corrosion resistance
  • Also available with 304 stainless steel components for coastal and corrosion-prone locations
• Flexible Options:
  • Lockable keyed alike — order two, five or fifty and every lockable winder opens with the same key
  • Compatible with retrofitting older models

Ideal For

• Security while ventilating: leave windows open for fresh air while the narrow opening adds a layer of deterrence against opportunistic entry
• Ground-floor and low windows: windows within 2m of the ground, where strata/NCC opening limits don’t apply
• Rentals & commercial: limit how far sashes swing out over walkways and paths
• Ventilation control: keeps the sash restrained so windows don’t slam or over-swing in gusts

Specifications

• Colour: COLORBOND® Surfmist®
• Handle Side: Left Hand
• Chain Type: Mild steel, zinc-plated
• Chain Restriction: set to 150mm (screwdriver-set on the base; no switch or adjustment once installed)
• Locking: Lockable, keyed alike (all lockable winders in an order share one key)
• Handle: Folding ergonomic handle
• Fixings: Stainless steel fixing screws included
• Dimensions: 280mm (L) (265mm between hole fixing centres) x 46mm (D) x 47mm (H). Back 273mm long.
• Sash Weight: Supports up to 35kg
• Compliance: Exceeds Australian window lock standards for security and durability

What’s Included

• 1 x Surfmist® window chain winder (Left Hand) with the chain restriction set to 150mm
• Stainless steel fixing screws
• Keys — and where you order multiple lockable winders, they are all keyed alike

Compatible Brands

• Direct replacement for most Whitco®, Stegbar®, Boral®, Dowell®, Trend®, AWS®, Bradnam’s® and Wideline® window winders

Also Available

• Standard 300mm chain version — Surfmist®, Left Hand, lockable keyed alike
• Standard 300mm chain version — Surfmist®, Left Hand, non-keyed
• 150mm restricted version — Surfmist®, Right Hand, lockable keyed alike

Additional Benefits

• Minimal Interference: Folding low-profile handle keeps clear of blinds and curtains
• Weather-Resistant finish suited to Australian conditions