The Double Wall B-Flex offers versatility, flexibility and cost savings in B-Vent installations. It eliminates the need for measuring, special adapters and the assembly of rigid pipe in many installations - saving time and labor. It offers maximum flex without kinks and can be used as a flexible connector from a gas appliance to rigid B-Vent or as a segment of B-Vent. Double Wall B-Flex comes ready to install. It is listed by Underwriters Laboratories (UL) and works with several other UL-listed gas vent products.

Metal-Fab Inc., P.O. Box 1138, Wichita, KS 67201; 316/943-2351; fax 316/943-2717; www.mtlfab.com.

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