DuraVent | PolyPro 2"-8" Inner Diameter Locking Band Clamp

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Regular price$5.22 Sale price$5.80
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Size: 2"
⛟ Estimated Delivery Date: Between and to all states excl. Alaska & Hawaii.


Introducing the DuraVent PolyPro Locking Band Clamp – the ultimate solution for all your venting needs. DuraVent, a name synonymous with excellence in the venting industry, has once again delivered a product that sets the standard for innovation, safety, and professionalism.

Engineered with the expertise that comes from years of experience, DuraVent's PolyPro Locking Band Clamp is designed to meet the exacting demands of the HVAC and Hearth markets. Whether you're a seasoned contractor or a homeowner looking for top-notch venting solutions, this locking band clamp is your key to enhanced performance and peace of mind.

At the heart of this remarkable product is the revolutionary PolyPro material. Unlike conventional PVC, PolyPro boasts a higher operating temperature limit of 230°F/110°C, making it the ideal choice for venting condensing gas appliances, water heaters, condensing boilers, and warm air furnaces. But that's not all; PolyPro is engineered with a condensation management system, ensuring efficient moisture control.


  • Effortless Installation: Say goodbye to time-consuming installations. DuraVent's PolyPro Locking Band Clamp makes connecting pipe sections a breeze, saving you valuable time and money.

  • Vertical Versatility: It's not just about horizontal installations. This clamp is also perfect for connecting pipe sections used in extended vertical setups.

  • High-Temperature Reliability: With a temperature limit of 230°F/110°C, PolyPro outperforms PVC and CPVC, providing unparalleled safety for your venting needs.

  • Condensation Management: PolyPro is engineered with a condensation management system, ensuring efficient moisture control and preventing costly damage.

  • Industry-Leading Warranty: Rest easy with a 10-year limited warranty, a testament to the durability and quality of DuraVent's products.

Key Features

  1. PolyPro Material: Engineered for high-performance venting, PolyPro's superior temperature tolerance and condensation management set it apart.

  2. Secure Locking Band Clamp: Ensures a tight, dependable connection for worry-free venting.

  3. Versatile Sizing: Available in various dimensions from 2" to 8" inner diameter to suit a range of applications.

  4. Zero Clearance: Designed with safety in mind, this clamp offers 0" clearance to combustibles for vertical installations.

  5. ULC S636 Certified: Complies with the ULC S636 standard in Canada, providing peace of mind and regulatory compliance.


DuraVent's PolyPro Locking Band Clamp is the go-to choice for venting ANSI Category II and IV gas-burning appliances. It's a perfect fit for high-efficiency water heaters, condensing boilers, and warm air furnaces. Intertek lists PolyPro to the ULC S636 standard in Canada as a Class IIA, IIB, and IIC vent system suitable for exhaust temperatures up to 230°F/110°C and a maximum positive pressure of 15 in-w.c.


Model Dimension
2PPS-LBC 2" I.D x 2.375" (A) x 2.5" (B)
3PPS-LBC 3" I.D x 3.125" (A) x 2.5" (B)
4PPS-LBC 4" I.D x 4" (A) x 2.5" (B)
5PPS-LBC 5" I.D x 5.125" (A) x 2.5" (B)
6PPS-LBC 6" I.D x 6.125" (A) x 2.5" (B)
8PPS-LBC 8" I.D x 8.125" (A) x 2.5" (B)
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.

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.

Order Shipment:

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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