Stop Settling for Standard Sizes: The Ultimate Made-to-Measure Round Duct Adapter Flange

Stop Settling for Standard Sizes: The Ultimate Made-to-Measure Round Duct Adapter Flange

If you’ve ever tried to connect a ventilation hose, an extraction duct, or a shop vac to a flat surface, you know the frustration. You measure your hose, head to the hardware store (or search online), and find that off-the-shelf duct flanges only come in standard sizes like 100mm or 150mm.

But what if your laser engraver needs an exact 43mm port? What if you require a 68mm exhaust vent?

Using gaffa tape or badly fitting adapters leads to air leaks, loss of suction, and messy setups. That’s why we created the solution: the Plastic Air Vent Flange & Round Duct Adapter - custom manufactured to the exact millimetre you need.

Metal duct system with a hose attached via plastic mounting plate in an industrial setting

We Make Every Size: 10mm to 150mm

The standout feature of our round duct wall plate is completely bespoke sizing. We don't just stock the standard sizes; we manufacture the flange to match your exact required diameter.

Whether you need a tiny 12mm port for micro-cooling or a heavy-duty 148mm duct collar for a workshop extractor fan, we can make it.

Need something bigger than 150mm diameter – we can help.

Why Choose a Custom Ducting Mounting Plate?

  • A Perfect, Snug Fit: No more air leaks or wobbly connections. Input your exact internal diameter, and we’ll create an adapter that fits seamlessly.
  • Heavy-Duty Construction: Built from durable, rigid plastic to withstand continuous airflow, high-pressure dust collection, and commercial extraction demands.
  • Easy Wall Mounting: Features a secure, flat square base with pre-drilled corner holes. It mounts perfectly flush against walls, wooden boards, acrylic panels, or metal enclosures.
  • Made in the UK: Manufactured locally to the highest standards, ensuring quick turnaround times and tracked UK shipping.

Top Applications for Custom Vent Flanges

Because we can make these to match any diameter, our customers use them across a massive variety of commercial, workshop, and DIY projects. Here are just a few ways this versatile flange is being used:

1. Laser Engraving & 3D Printing Exhausts

Proper ventilation is critical for resin 3D printers and laser engravers. Our adapters make the perfect laser engraver exhaust port or 3D printer enclosure vent mount. Just measure your flexible exhaust hose, order the exact size, and easily bolt the flange to your acrylic or MDF enclosure to safely pipe out toxic fumes.

2. Workshop Dust Extraction Systems

Woodworkers know that standard shop vac hoses almost never perfectly fit standard PVC pipes or bespoke machinery. Our flange works flawlessly as a dust collector port adapter or a custom shop