Ring 4 is an optional Flow Ring for the Series B Duct Blaster® fan used to measure very low air flows. Ring 4 has a flow range of approximately 2.4 to 25.0 cfm (1.1 l/s,
4.0 m3/h).
Product Number: RING4
The shipping fee is not included in the price. Please contact Radon West at 403.723.6665 for a shipping quote.
