Add $175.00 for FREE shipping
Prevent Pressure Buildup inYour HVAC System
12 Inch Diameter Barometric Pressure Relief Bypass Duct
12 Inch Diameter Barometric Pressure Relief Bypass Duct
12 Inch Diameter Barometric Pressure Relief Bypass Duct
Item# 3072C
Open Box (Qty:1) $22.44 ea - Add to cart
Free shipping on orders over $175 - See Details


  • Rigid barrel won't bend out of shape
  • Fast installation

Essential Info

HVAC systems with 3 or more zones should be equipped with a pressure relief bypass duct to prevent over pressure buildup that may damage the system. This duct is installed just ahead of the blower. It opens and redirects some of the airflow back into the blower intake when pressure builds up due to many dampers being closed. This mechanical bypass duct, constructed of Galvanized Sheet Metal, is continuously variable, and the pressure relief level is easily adjustable.

What's Included

  • 12 Inch Diameter Barometric Pressure Relief Bypass Duct
  • Specifications


    Manufacturer:Residential Control Systems
    Manufacturer Product No.:001-00234 12RDB
    Diameter12 inches


    2 Ratings
    5 star: 50%  (1)
    4 star: 50%  (1)
    3 star: 0%  (0)
    2 star: 0%  (0)
    1 star: 0%  (0)
    Average Customer Rating
    (2 customer ratings)
    Share your thoughts with other customers
    ERIC -- san diego, CA   4/22/2006
    All of the smarthome products that I ordered worked great! Easy install...I did it myself.
    TED -- garden grove, CA   4/21/2005
    This is what I needed for my HVAC system.
    Sign-up for Exclusive Email offers 
    How to Order Track Your Package Shipping Returns Contact Us Customer Service Retail Store
    Getting Started Learning Center FAQ Dealers Customer Testimonials Affiliate Program
    About Us INSTEON Press Awards Employment Guarantees Security & Privacy
    Free Catalog Email Newsletter Forum RSS Site Map
    Have questions? Call us at 800-762-7846 (Mon-Fri 5am-7pm and Sat 6am-3pm PT) or send us a message
    Place your order by 3pm PT for same day shipping
    Copyright 1995-2014 SMARTHOME™
    Verisign Secure Site PayPal Acceptance Mark