QWORK 4" Two-Hole Duct Connector – 2 Pack Round Ventilation Extension Fitting for HVAC Systems

4" Two-Hole Duct Connector – 2 Pack Round Ventilation Extension Fitting for HVAC Systems

Features

  • Material: Crafted from galvanized steel, those 2 Pack duct connectors offer exceptional strength, durability, and toughness for long-lasting performance.
  • Perfect Fit: The 4-inch size (OD 3.9") ensures a seamless connection with any compatible 4-inch pipes, vents, or connectors, facilitating effortless installation.
  • Leakproof Design: Achieves an optimal leakproof seal, ensuring efficient airflow and reducing the risk of air leaks within your ventilation system.
  • Ease of Installation: Simple to install with standard steel clamps, making it a convenient solution for both residential and commercial HVAC systems.
  • Customizable: Versatile and easily combinable with other products to customize and expand your ventilation system, tailored to your specific requirements.

Specifications

Color 2 Pack
Size 4 Inch
Unit Count 2

Two-pack of 4-inch (3.9" OD) round two-hole duct connectors made from galvanized steel for joining vents and pipes in HVAC systems. They provide a leak-resistant seal, install with standard steel clamps, and can be combined with other fittings to customize ventilation layouts.

Model Number: WD33533

Project Ideas

Business

Industrial Home Décor Line

Design and sell a small line of industrial-style home goods—shelves, light fixtures, planter stands—built around the two-hole connectors. Market via Etsy, Instagram, and local craft fairs; offer standard sizes plus custom options. Price to include materials, labor and a 3x markup for retail, with bundle discounts using the 2-pack as a starter component.


DIY Ventilation & Grow Kits

Pack the connectors into turnkey DIY ventilation kits for hobbyist growers or small workshops (include flexible ducting, clamps, adapters and instructions). Sell through niche forums, local supply stores and online marketplaces. Offer tiered kits (basic, pro) and digital support guides to increase perceived value and reduce returns.


Upcycling Workshops & Experiences

Host paid workshops teaching people how to transform duct connectors and other HVAC scraps into decor and furniture. Revenue from ticket sales, on-site kit purchases and follow-up online classes. Partner with makerspaces or garden centers to attract audiences and upsell finished pieces.


Set & Prop Rental for Film/Events

Build a catalog of industrial props and furniture (pipe shelving, lighting rigs, signage) using the connectors and rent them to film productions, photographers and event planners. Maintain high-quality finishes and modular pieces that are quick to assemble on set. Charge daily rental rates plus delivery and setup fees.


HVAC Retrofit Add-On Service

Offer a niche service for small HVAC upgrades or duct reconfigurations using pre-assembled connector kits for homeowners and contractors. Market as a fast, leak-resistant retrofit solution. Revenue comes from service fees, parts markup and repeat maintenance contracts.

Creative

Industrial Two-Pipe Floating Shelf

Use the 4" two-hole connectors as mounting brackets to join two parallel galvanized pipes that become shelf supports. Clamp the connectors to the pipes, attach a reclaimed wood plank on top, and secure with screws through the connector flange for a heavy-duty, industrial-looking floating shelf that holds plants, books or tools.


Dual-Bulb Pendant Light

Create a pendant light with two bulbs spaced evenly by the connector's twin sockets. Mount the connector to a short length of conduit or a wooden block, run wiring through one or both holes, attach vintage Edison sockets and shades, and hang from a ceiling canopy for a steampunk/industrial fixture.


Twin Planter Stand

Build a standing planter that holds two 4" pots side-by-side. Use the connectors to join vertical legs and horizontal support rings; the galvanized steel resists moisture so it works well for indoor or covered outdoor displays. Paint or patina the metal for a custom finish.


Bird Feeder / Seed Dispenser with Dual Ports

Fashion a weather-resistant bird feeder by backing the connectors with a small metal or wooden box and routing seed chutes through the two openings. The durable galvanized surface reduces leakage; hang from a tree or mount on a post to attract multiple species simultaneously.


Wind-Driven Air Chime Sculpture

Turn connectors into the structural centerpiece of a kinetic garden sculpture: suspend lengths of metal tubing, bottle caps, or chimes from the connector holes so they pivot and chime in the breeze. The weight and finish of the galvanized steel give it an industrial-art aesthetic.