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Seal supply vents for duct leakage testing with this 100% reusable system. The "Single" features a 1/4" barbed adapter to attach your reference hose. That's the green hose on a Duct Blaster® or the blue hose on a DucTester. The "Single" can also be used as a small pressure pan. They are 10" by 16" inside the gasket.
*Pole RAT remote attachment tool is sold separately.