MK8 CHAINWINDER, PUSH TO LOCK, MS CHAIN, RP, CYL4 SHARP SILVER KINETIC PEARL

MK8 Chainwinder with CYL4® Push to Lock — Awning Window Operator

Lockable chain operator for aluminium or timber awning windows. Features CYL4® one-key security — re-key to match your existing C4 door locks for convenient unified home security. Push button to lock, key to unlock.

Suits butt or hook hinges and non-friction stays. Operates smoothly through flyscreens with maximum 300 mm opening (19 handle turns). Foldable knob reduces width to prevent interference with blinds and window damage.

Retail pack includes mild steel chain, opening restriction clip (for 100 mm or 150 mm compliance with Building Code Australia D2.24), standard and one-way fixing screws, sash security brackets, and printed instructions.

Zinc diecast body with passivated zinc steel base plate and chain. Retrofits existing MK7 and MK8 models. Meets Australian standard AS4145.3-2001 level DW2SW2K1. Stainless steel corrosion-resistant variant available.

Model W380111. Whitco 10-year mechanical warranty.

Standard and Express orders are shipped within 1–2 business days, provided they do not contain special-order items. Special-order items may require additional processing time, which will be noted on the product page.