The AC Infinity Noise Reduction Clamp is a soft nitrile rubber duct coupler that joins two ventilation components and stops fan vibration passing through the connection, replacing the rigid metal-to-metal contact that carries hum down a duct run. It is the isolation half of AC Infinity's noise-control pair, and the cheapest place to start quietening a line: where the AC Infinity Inline Fan Silencer absorbs the noise moving inside the airstream, the clamp kills structure-borne noise at the join itself, and unlike a plain metal coupler it is also the sealing and mounting hardware in its own right.
The coupling is moulded from nitrile butadiene rubber in a hard-wearing NBR 65A grade with a matte black finish, soft enough to absorb the sound waves that fan vibration sends through ductwork yet firm enough to carry the weight of the components it joins. Ribbed grooves moulded into each end locate the two included stainless steel hose clamps, and their worm-drive locks take either a flat-head or Phillips screwdriver, pulling the rubber down into an airtight seal that will not leak or slip under a running extraction line. Because the joined parts no longer touch metal to metal, the coupler also serves as a soft support for inline fans, carbon filters, mounting grilles and dampers.
Three sizes cover the standard duct lines, with actual opening diameters of 10.1 cm (3.97") on the 100 mm, 15.1 cm (5.94") on the 150 mm and 20.1 cm (7.91") on the 200 mm, matching the flanges on the AC Infinity Cloudline Pro T Mixed-Flow Inline Fan, the AC Infinity Carbon Filter and standard ducting of the same nominal size. The clamp works on vibration at the join only; noise already travelling inside the airstream continues down the duct and is a job for an in-line muffler. Fitted between a fan and its ducting or filter, it seals the connection airtight and breaks the rigid path that would otherwise turn the whole duct run into a sounding board.
NOTE: each coupler joins components of a single matching duct size; it is not a reducer between different diameters.
A soft NBR rubber duct coupler that seals and joins ventilation components while stopping fan vibration passing through the connection.
Vibration-Damping Join
Soft NBR rubber breaks the rigid path that carries fan hum down a duct run.
Simple Screwdriver Fit
Two stainless steel worm-drive clamps tighten with any flat-head or Phillips screwdriver.
Leak-Free Seal
Clamped rubber pulls down airtight, preventing air leaks under a running extraction line.
Low Stock - 1 available
Back-OrderCurrently out of stock: back-order now to reserve yours from the next shipment.Estimated dispatch around 25 October.
Moulded from hard-wearing NBR 65A nitrile rubber with a matte black finish
Includes two stainless steel worm-drive hose clamps seated in moulded ribbed grooves
Clamp locks tighten with either a flat-head or Phillips screwdriver
Forms an airtight seal that prevents air leaks at the join
Breaks the metal-to-metal contact that carries fan vibration down a duct run
Doubles as a soft mount for inline fans, carbon filters, grilles and dampers
Actual openings of 10.1, 15.1 and 20.1 cm (3.97, 5.94 and 7.91 in) across the three sizes
Covered by a 2-year manufacturer warranty
Directions for Use
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Choose the coupler size matching the duct, fan or filter neck diameter (100, 150 or 200 mm).
Slide the rubber coupling over the two components being joined so each end fully overlaps its port.
Seat a stainless steel hose clamp in each ribbed groove moulded into the coupling.
Tighten each worm-drive lock with a flat-head or Phillips screwdriver until the join is airtight and firm.
Technical Specifications
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100 mm (4 inch)
Product Model AC-RCA4
UPC Code 819137023529
Opening Diameter 10.1 cm (3.97")
150 mm (6 inch)
Product Model AC-RCA6
UPC Code 819137023536
Opening Diameter 15.1 cm (5.94")
200 mm (8 inch)
Product Model AC-RCA8
UPC Code 819137023543
Opening Diameter 20.1 cm (7.91")
All Models
Body Material Nitrile Rubber (NBR 65A)
Colour Matte Black
Included Clamps 2x Stainless Steel, worm-drive (flat-head and Phillips)
Warranty 2 Years
Shipping & Returns
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Check delivery options for the currently selected item and quantity.
Estimate is for this item and quantity only. Final whole-order freight is confirmed at checkout.
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
If your return is accepted, we’ll send you a return shipping label, as well as instructions on how and where to send your package. Items sent back to us without first requesting a return will not be accepted.
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Key Highlights
Directions for Use
Technical Specifications
