The Model VM133 10-foot Steel Tubing is central vacuum grade 2-inch outside diameter, steel tubing. Local building codes in some areas may require that steel tubing must be used for the central vacuum’s exhaust system. The exhaust system routes the exhaust air from the central vacuum power unit to outside the residence. AirVac steel tubing and fittings can be connected using Pliobond® Brand Steel Tubing Adhesive.
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