FlexaBoot by Thermaflex

Replaces expensive and cumbersome rectangular internally-lined sheet metal boots at less than half the cost. UL approved for return air plenum spaces, the FlexaBoot is acoustically designed and tested for optimum sound attenuation. The FlexaBoot comes precut with factory collars installed on both ends insuring that no fibrous materials are exposed to the airstream. It can be rotated 360° to maximize sound attenuation position. It fits all 16″ round neck return grills and installs on any 24″ x 24″ return grill with optional square to round adapter. It reduces labor, shipping, and material handling costs, and it also reduces chances of ceiling grid damage. 10″ 4 per carton and 16″ 3 per carton. The FlexaBoot is only available in 7 foot lengths, and is only available for M-KE products.