Broan-NuTone WVK2A Flexible Wall Ducting Kit — 9-Piece 4" Duct Kit for Exhaust Fans

Upgrade your home’s exhaust ventilation with the Broan-NuTone WVK2A Flexible Wall Ducting Kit. This 9-piece kit is designed to simplify routing for 4-inch exhaust fans and delivers a compact, durable solution that helps you finish a clean installation. The resin-based components are built to resist impact and sun exposure, which may contribute to longer life in bathroom or utility spaces. Note this kit is not intended for use with dryers.

What you get

The kit includes several thoughtfully selected parts to make installation straightforward, even if you’re upgrading existing duct runs. Designed for standard 4" systems, it supports flexible routing while keeping a neat exterior finish.

• 5 ft of 4" flexible foil ducting for adaptable layouts
• 4" metal duct connector for a secure connection
• 4" to 3" reducer for compatibility with different ducts
• 3" to 4" duct adapter to ease transitions between sizes
• White polymeric wall cap with four mounting screws for a clean exterior look
• Zip ties and mounting screws included for quick securing
• Additional hardware and simple instructions for common installations

Durable, versatile design

Constructed with resin materials that resist impact and UV exposure, the WVK2A kit is built for steady performance in a variety of spaces. The design emphasizes modularity, enabling straightforward integration with typical 4" ducts. The kit is not intended for use with dryers.

Installation tips and best uses

• Plan a short, direct duct path to minimize bends
• Attach the 4" duct connector to the fan housing, then connect the duct
• Use the reducer and adapter as needed to fit your run
• Secure everything with zip ties and mounting screws
• Mount the wall cap flush against the exterior wall for a neat finish

Why this kit may fit your project

Whether upgrading an existing vent or installing a new exhaust fan, the WVK2A kit offers a ready-to-go ducting solution. It aims to reduce installation time while delivering a tidy look. Review your duct length, fittings, and fan outlet to assess compatibility with the 4" to 3" options. The described benefits are possible outcomes, not guarantees.