Window Winder Black | Left Hand | Non-Keyed | 150mm Restricted Chain – Replaces Most Winder Brands incl. Whitco®

Designed to work seamlessly with both timber and aluminium window systems, this black restricted-chain window winder by TradeBase offers smooth functionality, smooth non-locking operation, and a low-profile design that suits dark and neutral colour schemes. The fixed 150mm restricted chain limits the window opening to a 150mm maximum.

Key Features

• Clean black finish — matches black and dark powder-coated window frames and hardware
• 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.
• Buying for pool-barrier or fall-prevention opening limits? Choose the 100mm restricted version instead.
• 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
  • Fixed 150mm restricted chain — the restriction is built in, with no switch or adjustment required
• 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:
  • Non-locking operation
  • Compatible with retrofitting older models

Ideal For

• Security while ventilating — keep windows open for fresh air with a narrower opening that adds deterrence (a deterrent, not a guarantee against forced 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 windows swing over walkways and paths
• Ventilation control — keeps the sash held short so windows don’t slam in gusts

Specifications

• Colour: Black
• Handle Side: Left Hand
• Chain Type: Mild steel, zinc-plated
• Chain Length: 150mm (restricted)
• Locking: Non-locking (non-keyed)
• 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
• Recommended Maximum Sash Width: 900mm for optimal weather sealing

What’s Included

• 1 x Black window chain winder (Left Hand)
• 150mm restricted chain (fixed length)
• Stainless steel fixing screws
• (non-keyed — no lock/key)

Compatible Brands

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

Also Available

• 100mm restricted chain version (Left Hand, Black, non-keyed)
• 120mm restricted chain version (Left Hand, Black, non-keyed)
• Standard 300mm chain version of this winder (Left Hand, Black, non-keyed)

Additional Benefits

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