Replace your standard hose clamps with HVAC Quiet Clamps from C.A.P. Made of 2” galvanized steel and lined with thick neoprene. Neoprene is a versatile synthetic rubber that isolates heavy airflow and reduces noise vibration. These easy to mount clamps will attach to standard or flexible duct, inline fans, and carbon filters. Quiet Clamps come in packs of two and are available in 4”, 6”, 8”, 10”, and 12” sizes.