DuraVent | PolyPro Reducer 3"-8" Diameter

Save $3.92
DuraVentSKU: 3PPS-R2L

Sale price$35.34 Regular price$39.26
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Size: 3"-2"

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When it comes to venting water heaters, condensing boilers, and warm air furnaces, PVC pipes have long been the standard choice. But now, DuraVent introduces the game-changer - PolyPro, an engineered alternative designed specifically for condensing gas appliances. Unlike PVC, PolyPro makes installation a breeze, saving contractors precious time and resources. With a higher operating temperature limit of 230°F/110°C (compared to PVC's 149°F/65°C and CPVC's 194°F/90°C), PolyPro ensures durability even in the most demanding environments. Plus, it's engineered with an effective condensation management system.


  1. Seamless Transition: Effortlessly adapt your venting system to a smaller diameter.
  2. Locking Clamp Included: Ensures a secure and hassle-free installation.
  3. Superior Heat Tolerance: Withstands temperatures up to 230°F/110°C, outperforming PVC and CPVC.
  4. Condensation Control: Built-in condensation management system for added reliability.
  5. Code Compliant: Meets ANSI Category II and IV standards for gas-burning appliances.

Key Features

  1. Versatile Transition: Ideal for a variety of HVAC and Hearth applications.
  2. Built to Last: Crafted with durability and longevity in mind.
  3. Easy Installation: Simplifies the work for contractors, saving time and money.
  4. Enhanced Safety: Designed to meet and exceed industry safety standards.
  5. Reliable Performance: Count on PolyPro for consistent, high-quality venting.


PolyPro is your go-to solution for venting ANSI Category II and IV gas-burning appliances. It's the perfect fit for high-efficiency water heaters, condensing boilers, and warm air furnaces. Notably, PolyPro is Intertek listed to the ULC S636 standard in Canada, qualifying as a Class IIA, IIB, and IIC vent system. It's engineered to handle exhaust temperatures up to 230°F/110°C and a maximum positive pressure of 15 in-w.c. Trust in PolyPro for top-tier performance in demanding environments.

Typical Installations

  1. High-Efficiency Water Heaters: Upgrade your water heater venting system for enhanced efficiency and safety.
  2. Condensing Boilers: Ensure optimal performance and durability for your condensing boiler with PolyPro.
  3. Warm Air Furnaces: Keep your warm air furnace running smoothly and safely with PolyPro venting solutions.
  4. Commercial HVAC: Trust in PolyPro for commercial HVAC applications, where safety and reliability are paramount.
  5. Residential Heating: Elevate the performance of your residential heating systems with PolyPro's superior venting capabilities.


Model Dimension
3PPS-R2L 3"-2" Diameter x 5" (A)
4PPS-R3L 4"-3" Diameter x 5" (A)
5PPS-R4L 5"-4" Diameter x 7.625" (A)
6PPS-R5L 6"-5" Diameter x 7.75" (A)
8PPS-R6L 8"-6" Diameter x 5.9375" (A)
Clearance 0” clearance to combustibles / vertical installations
Listings ULC S636 is Listed as a Class IIA, IIB, and IIC vent system.
Warranty 10-years Limited warranty


About the Manufacturer

Consistently the first to market with new innovations in venting systems, DuraVent has captured a leadership position in emerging markets. DuraVent has patents for several products and continues to design safe and technologically advanced venting.The company’s research into solving problems with corrosion, when biofuels such as corn are used, led to the break-through patent for PelletVent Pro.

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Order Confirmation:

Upon placing your order, you will promptly receive an email confirmation. Subsequently, we will conduct a thorough inventory check to ensure all items are in stock and available for immediate shipment. If your order aligns with the advertised delivery timeframe, we will promptly process it for shipment to our warehouse. In cases where the expected delivery time extends beyond the advertised timeframe, we will reach out to you via email and/or phone for confirmation.

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Within one business day of your item being shipped, you will receive an email confirmation containing a tracking number. If you do not receive tracking information within six business days of placing your order, please don't hesitate to get in touch with us for assistance.

Estimated Time of Arrival:

Our typical delivery timeframe ranges from 2 to 10 business days. Custom-made products generally require 3 to 5 weeks for delivery. If the expected delivery date for your order would fall outside of the advertised 2-10 business day time frame, our customer service team will contact you to ensure your agreement with the revised timeline.

Covered Areas:

Please note that all estimated delivery dates and shipping costs advertised on our website apply exclusively to the Contiguous United States. For inquiries regarding shipping to Hawaii or Alaska, kindly reach out to our customer service team. While we do not offer direct shipping to Canada, we are more than willing to ship your order to the freight carrier of your choice.


It is very important that you inspect the packaging of your items when they arrive and check if you received all boxes listed on the delivery receipt. If you notice any damage or shortage of packages, you must make note of it on the bill of lading, take pictures, and refuse delivery. Your note should say "refused due to damage". You must also take photos of all sides of the box and send them to us within 2 days. If there are no damages visible before opening the box, you must note "subject to further inspection may contain concealed damage". If you notice any damage after receiving the delivery, do not throw the box away, and contact us with the photos. After we receive information from you about the refused delivery or concealed damage, we immediately initiate a claim with the shipping company or with the manufacturer. After the claim is fully processed, we ship all replacements at absolutely no cost to you.

Cancellations & Refunds:

We offer free order cancellations before the shipping label or Bill of Lading is generated, or prior to the commencement of production for custom orders. Please note that custom-made items are not eligible for refunds once production has begun. To be eligible for a return, the item must be unused and in its original condition, with all packaging intact and in perfect condition. Orders delivered outside of the United States are not eligible for refunds. If your order arrives damaged, please refer to the "Damages" section. Our refund policy extends for 30 days. If 30 days have elapsed since your purchase, regrettably, we cannot process a refund. Prior to returning an item, please contact us to discuss shipping details. All refunds will be credited to the original credit card or PayPal account used for the purchase, within two days of receiving the returned items at our warehouse.

Please contact sales@belleflame.com for any questions regarding shipping time.

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