Metal-Fab 3"/3" Direct Vent Masonry Relining Kit

Estimated Arrival: Between and . (To All Contiguous States)

✔ Same-Day Order Processing
✔ Free Returns
✔ No Restocking Fees
✔ Financing Options Available

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Metal-Fab provides complete and comprehensive venting solutions to the HVAC, Hearth and Plumbing markets.  Founded in 1958 on the premise that offering better products and services would be the key to our success.

Metal-Fab continues to operate today as a privately held entity with the same core values that lead to success while creating steady, stable growth over the past six decades.

Customer needs are the highest priority at Metal-Fab which is why every customer receives a unique experience while choosing from a full line of high-quality venting products for commercial, residential and industrial applications. 

Cutting-edge manufacturing systems, innovative designs, patent products, unmatched product quality, and a focus for detail have resulted in a leadership position within the industries Metal-Fab serves.  Our constant product improvement process and experience in developing and engineer products for safe, efficient appliance operation sets Metal-Fab apart from the competition.



Direct vent systems are balanced pressure systems acquiring intake air from outside the dwelling while exhausting combustion gases through the sealed flue.  UL 2112 tested and listed, Metal-Fab Direct Vent products are designed for safety, strength and reliability, generating a product that lasts a lifetime. The precision design and construction of the 430 stainless steel flue eliminate the need for gaskets and reduce leaks, enhancing product dependability and safety.  Our innovative male-to-female slip connection design with flared female connections yields a product that is easy to install, reducing cost and installation time.



  • Designed for masonry relining
  • Unitized termination design
  • Flexible aluminum liners
  • Intake and Exhaust termination


    New Technology

    The special double-wall construction of Metal-Fab Direct Vent allows direct vent stoves and fireplaces to operate without using air from inside the building. These direct vent appliances draw combustion air in from outdoors through the direct vent system, meaning that warm inside air is not being used to fuel the appliance. The appliance burns efficiently without creating fumes, condensation or smoke in the room.



    Safety Information: See CA Prop 65 Warning