AC Infinity 8-Inch Flexible Rubber Noise Reduction Duct Coupling

The AC Infinity AC-RCA8 connects 8-inch inline exhaust fans, carbon filters, silencers and rigid duct ports without the need for extra flexible ducting. Its flexible Nitrile Butadiene Rubber (NBR Grade 65A) body forms a secure seal around solid duct flanges while helping isolate motor vibration and reduce sound transmission through the ventilation system.

Two stainless steel worm-drive clamps sit in exterior alignment channels for a firm, non-slip hold. An internal centre separator keeps the connected metal duct spigots apart, helping reduce rattling and vibration as air moves through the system.

Key Features

• 8-inch compatibility: Designed for solid duct ports measuring approximately 20.3 cm in diameter.
• Vibration and noise reduction: The thick NBR rubber body helps absorb motor hum, mechanical resonance and airflow noise.
• Airtight connection: Creates a flexible seal around metal spigots to help prevent air leaks, odour bypass and static pressure loss.
• Built-in stainless steel clamps: Includes two adjustable worm-drive clamps that tighten evenly using Phillips or flat-head screwdrivers.
• Slip-on fitting: The flexible collar fits over metal flanges, carbon filter collars and inline fan housings.
• Universal component fit: Suitable for joining 8-inch inline fans with carbon filters, dampers, silencers and other compatible ducting components.

Technical Specifications

Suitable Applications

• Indoor cultivation ventilation: Connects an 8-inch inline exhaust fan to an 8-inch carbon filter inside a grow tent or dedicated grow room.
• Silencer and fan isolation: Helps prevent mechanical vibration transferring between high-volume exhaust fans, duct silencers and connected equipment.
• Residential HVAC and commercial venting: Joins rigid metal ducting, range hoods and exhaust spigots while helping reduce motor noise.