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Robwen faom nozzles feature unique, angled, venturi-style slots which produce a superior foam blanket. Air is drawn in through the slots to produce a 9:1 expansion ratio in the low expansion series and a 52:1 expansion ratio for the medium expansion model. The PVC construction is lightweight yet durable. All nozzles are 1½” NST. Ship wt. 5 lbs.
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