MDN400 Twin Chainwinder Locking C4 Key 96001 S/S Chain Blk - Black (Hware)

The MDN400 Twin Chainwinder Locking C4 Key 96001 S/S Chain Blk is a heavy-duty twin-chain window operator designed for large, wide or heavy awning window sashes. Its dual-chain configuration distributes operating force across two points on the sash, helping provide balanced movement and reduce the potential for sash twisting during operation. The unit is operated through a single central lever and features a Stainless Steel chain assembly for durability and corrosion resistance. The locking mechanism uses a DS187 C4 pin cylinder, factory pre-keyed to Key #96001, providing secure key-operated locking. The DN400's revised gear ratio requires approximately 16 handle turns for full operation. It also incorporates a low-profile fold-down lever, an inbuilt opening restriction mechanism and a quick-release sash plate to assist with window maintenance and cleaning.