Window Chain Winder White | Left Hand | Lockable – Keyed Alike | 150mm Restricted Chain | Whitco® Compatible

Covered by a 12 year TradeBase warranty. Every TradeBase window winder is warranted for 12 years against defects in materials and workmanship — in addition to the guarantees you are entitled to under the Australian Consumer Law.

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 white 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.

Replacing a Whitco® or Other Branded Winder?

• Check the fixing centres first: this winder measures 265mm between screw-hole centres and 280mm overall body length. Measure the hole spacing on your existing winder — if it matches, this drops straight into the same holes with no new drilling.
• Suits timber and aluminium awning and casement windows with butt hinges, hook hinges or non-friction stays.
• Direct replacement for most Whitco®, Stegbar®, Boral®, Dowell®, Trend®, AWS®, Bradnam’s® and Wideline® window winders.
• Not sure? Send us a photo of your existing winder and we’ll confirm the fit before you order.

Key Features

• Clean white finish — matches white window frames and hardware
• Mechanism tested to a 35kg sash — handles heavy timber and large aluminium sashes without straining
• 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 the White Left Hand 100mm restricted version.
• Built to Last:
  • Robust diecast zinc body and mechanism for durability
  • Mild steel zinc-plated chain for everyday corrosion resistance
  • 12 year warranty against defects in materials and workmanship
  • 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: White
• 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: Mechanism tested to 35kg (tested at 300mm opening)
• Warranty: 12 years against defects in materials and workmanship
• Compliance: Exceeds Australian window lock standards for security and durability

What’s Included

• 1 x White 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

Also Available

• Standard 300mm chain version — White, Left Hand, lockable keyed alike
• 150mm restricted version — White, Right Hand, lockable keyed alike
• 100mm restricted version — White, Left Hand, stainless steel, lockable keyed alike

Additional Benefits

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

TradeBase window winders are an independent replacement part manufactured by TradeBase Australia. Whitco®, Stegbar®, Boral®, Dowell®, Trend®, AWS®, Bradnam’s® and Wideline® are the registered trademarks of their respective owners and are referenced here solely to indicate fitment compatibility. TradeBase is not affiliated with, endorsed by or sponsored by those companies.