Custom HVAC Ductwork That Fits: Start Collars, Flex Connectors, and Plenums Made to Order

Custom HVAC Ductwork That Fits: Start Collars, Flex Connectors, and Plenums Made to Order

Custom Ductwork Components for a Cleaner, Easier Install

Straight Start Collars, Canvas Flex Connectors, and Sheet Metal Plenums Built to Your Specs

When it comes to ductwork, fit and function are everything. Whether you're a contractor looking to save install time or a homeowner upgrading an HVAC system, starting with the right components makes all the difference. That’s where DuctworkDelivered.com comes in. We offer custom-sized straight duct start collars, flexible canvas duct connectors, and sheet metal plenums — all built to spec and shipped directly to your door.

Custom Straight Duct Start Collars

Start collars are critical for tapping into trunk lines cleanly and securely. We make it easy to order the exact dimensions you need for your job. Whether you're working with round, oval, or rectangular duct, our custom straight collars ensure a snug fit and solid airflow connection without the need for on-site modifications.
✅ Compatible with standard or custom trunk ducts
✅ Available with or without bead or flange
✅ Save install time with a precise factory fit

Custom Flexible Canvas Duct Connectors

If you're looking to reduce vibration and noise in your HVAC system, flex duct connectors are a must. Ours are built to order using heavy-duty galvanized sheet metal and commercial-grade canvas. You can customize length, width, and flange configuration — no trimming or fabricating needed.
✅ Designed to absorb movement and prevent rattling
✅ Fire-rated and built to handle static pressure
✅ Shipped flat and ready to install

Custom Sheet Metal Plenums

Every system is different — and that’s especially true for plenums. Instead of trying to force a one-size-fits-all box into your setup, we offer made-to-measure sheet metal plenums that match your coil, furnace, or air handler perfectly. Enter your dimensions online, get an instant price, and skip the guesswork.
✅ Vertical or horizontal configurations
✅ Optional filter rack and insulation
✅ Fully customizable dimensions and fittings


Why DuctworkDelivered.com?
We’re not a big-box warehouse pushing standard sizes. We’re a shop that understands field conditions — and we build ductwork to meet real-world needs. Our online ordering system makes it simple to input your specs and see pricing immediately. No waiting. No back-and-forth. Just custom HVAC parts delivered to your job site, fast.

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