Selkirk - 3" to 4" Increaser (Pellet Vent - VP - Type L)

SelkirkSKU: 3VP-I4

Sale price$80.36
Black Friday Sale is ON! Free Shipping & Returns on All Orders. Get 15% off with the Code: FRIDAY15 for purchase over $99 and 18% off with the Code: FRIDAY18 for purchase over $8000. Best Deal Ever! Need Help? Call 800-466-4712 or mail us at
⛟ Estimated Delivery Date: Between and to all states excl. Alaska & Hawaii.


Elevate your ventilation system with the Selkirk 3" to 4" Increaser, model 3VP-I4 (243304). Designed for seamless adaptability, this increaser ensures optimal performance in applications demanding a transition from 3" to 4" diameter pipes. Crafted with precision, it stands out in the Pellet Vent - VP - Type L series, a testimony to Selkirk's commitment to quality.

The gas vent increaser features VP's proven coupling design, incorporating a built-in gasket for rapid, secure connections. This innovative design not only ensures joint integrity but also facilitates a quick installation process, saving you valuable time. With a matte black finish for interior use and a galvanized outer wall for exterior applications, the increaser not only performs efficiently but also complements any space with its sleek aesthetics.


  • Seamless Adaptability: Effortlessly transition from 3" to 4" diameter pipes for versatile applications.
  • Quick and Secure Installation: VP's proven coupling design with a built-in gasket ensures rapid, reliable connections.
  • Flexible Installation: A full line of components enhances installation flexibility, offering a variety of kit options.
  • Superior Materials: Constructed with a 304 Stainless Steel inner liner for durability and a matte black finish for interior aesthetics.
  • Safety Assurance: UL 641 listed, meeting the highest standards for gas, oil, and wood pellet burning appliances.
  • Minimal Clearance: With a 1" clearance to combustibles, this increaser prioritizes safety without compromising efficiency.
  • Hassle-Free Maintenance: Siliconized Rope Gasket at every joint eliminates the need for sealant, simplifying upkeep.


  • Type L Vent: Engineered with precision for optimal performance in a variety of applications.
  • Variety of Kits: Choose from a range of kits for a customized installation that suits your specific requirements.
  • Die Formed Male End: Eliminates sharp edges, ensuring safety during handling and installation.
  • Double-Wall Design: Boasts a 1/4" uniform airspace for enhanced insulation and efficiency.
  • Approved for Multiple Fuels: Suitable for gas, oil, and wood pellet burning appliances.
  • Matte Black Finish: Designed for interior use, combining functionality with aesthetic appeal.
  • Galvanized Outer Wall: Ideal for exterior use, providing durability and longevity.


  • Diameters: 3" to 4"
  • Vent Type: Type L
  • Clearance: 1" to combustibles
  • Inner Liner: 304 Stainless Steel
  • Finish: Matte Black (Interior), Galvanized (Exterior)
  • End Design: Die Formed Male End
  • Airspace: 1/4" Double-Wall Design
  • Application: Gas, Oil, Wood Pellet Burning Appliances
  • Gasket: Siliconized Rope Gasket at Every Joint
  • Approvals: UL 641, UL103 (applicable portions) Listed
Warranty: Lifetime Limited Warranty

Refer to the Smart Choice Warranty for full warranty details.


About The Manufacturer:


Selkirk products set themselves apart from the competition with their proven quality, safety, ease of installation, and lasting performance.  Selkirk is one of the most trusted brands in the industry because we stand behind everything we do.  From assisting with product selection, providing education and installation assistance, to our industry-leading warranties, we ensure your success every step of the way.

      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 for any questions regarding shipping time.

      At Belleflame, we're committed to providing our customers with the best prices on the market. That's why we offer a 110% best price guarantee. If you find a better deal on the same product somewhere else, just let us know and we'll beat it by an additional 10%.

      We believe that shopping should be easy, convenient, and most importantly, affordable. That's why we work hard to bring you the lowest prices on the products you love. But if you do happen to find a better deal elsewhere, we'll go the extra mile to make sure you get the best deal possible.

      Here's how it works:

      • Find a lower price on the same product from another retailer.
      • Contact us with the details of the offer, including the website or store name, product name, and price.
      • We'll verify the price and beat it by an additional 10%.

      It's that simple! Our 110% best price guarantee ensures that you'll always get the best deal possible when you shop with us. So, why wait? Start shopping now and experience the difference of shopping with Belleflame.

      At Belleflame, we believe that shopping should be simple, stress-free, and most importantly, enjoyable. That's why we work hard to bring you the best products, prices, and customer service in the industry.

      Here are just a few reasons why you should choose us:

      • Wide Selection of Products: We offer a vast selection of top-quality products from the leading brands in the industry. No matter what you're looking for, we have something for everyone.
      • No Sales Tax, no Hidden Fees: just the lowest prices on the market. When you shop with us, you can rest assured that the price you see is the price you'll pay. No matter where you live, you can enjoy tax-free shopping with us.
      • Fast and Free Shipping: We understand that you want your products as soon as possible. That's why we offer fast and free shipping on all orders.
      • Easy Returns: We want you to be completely satisfied with your purchase. If for any reason you're not happy, just let us know and we'll make it right.

      Customer Reviews

      Be the first to write a review

      Guaranteed Secure Checkout

      American Express Apple Pay Diners Club Discover JCB Mastercard PayPal Venmo Visa

      Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

      You may also like

      Recently viewed