VIT-Smooth - Increaser - Ø 100-125mm
At a Glance
- Versatile compatibility with gas, oil, and solid fuel appliances.
- Withstands temperatures up to 600°C, ensuring reliable performance.
- Constructed from premium zero carbon steel with a durable matt black powder enamel coating.
- Friction-fit installation minimises the need for excessive sealing.
- Customisable – easily cut to size for a perfect fit to your flue system.

We Won't Be Beaten On Price
At National Flues, we continuously monitor competitor prices. This ensures that we consistently offer you the best deals on all our products. Here’s how we keep your costs low:
- Daily Price Matching: Our team adjusts prices to ensure we stay competitive.
- Bulk Purchasing Power: We sell a lot, so we can negotiate better rates with suppliers, passing the savings directly to you.
- Operational Efficiency: We have streamlined processes to reduce overhead.
Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.
Free Delivery Over £100: Orders over £100 are free delivery (call us if delivery is required outside the mainland UK).
“I saved 20% on my purchase compared to other retailers. Exceptional service!” – Jane D.
Have Questions?
Phone: 01670 206999
Email: [email protected]
- Info
- Specs
- Install
- FAQs
The VIT-Smooth Increaser Ø 100-125mm is a versatile connecting pipe designed for use with gas, oil, and solid fuel appliances. Engineered to withstand temperatures up to 600°C, this increaser is made from zero carbon steel with a durable matt black powder vitreous enamel coating. Ideal for connecting your appliance to a Flue Liner, Chimney Stack, or Twin Wall Flue System, the VIT-Smooth should not be used to pass through ceilings or combustible walls.
Installation is straightforward with a friction fit joint, reducing the need for sealing. However, for added security, you can use jointing compound like fire cement or high-temperature silicone sealant. The increaser is also designed to be cut to size, with care taken to cover exposed steel with high-temperature paint to prevent rust.
Regular maintenance is essential, especially for solid fuel appliances, to ensure chimney cleanliness and safety.
SKU: 67-100-002
Technical Specifications | |
---|---|
Product Name | VIT-Smooth - Increaser - Ø 100-125mm |
SKU | 67-100-002 |
Material | Zero Carbon Steel |
Steel Thickness | 1.2mm |
Coating | Powder Enamel |
Coating Thickness | 0.2mm |
Colour | Black |
Approval | EN1856-2 T600 N1 Vm L80120 G375 |
Maximum Temperature | 600°C |
Installation Style | Friction Fit |
Customisable | Cut to size available |
Flue Compatibility | Gas, Oil, and Solid Fuel Appliances |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, April 3rd. If you need faster stove or fireplace delivery please give us a call. We can often reduce longer lead times if we pay the carrier £25 for express delivery. Visit our Shipping Information page for more information.
Warranty & Returns +
All our products come with warranties. Mi-Flex offers a lifetime guarantee. Returns for damaged items are covered by insurance; non-damaged returns incur return delivery costs.
Price Match Guarantee +
We will match any price like for like. If you find it cheaper within 48 hours, we'll refund the difference.
National Flues Ltd Verdict
The VIT-Smooth - Increaser Ø 100-125mm is a top-tier choice for connecting your appliance to flue systems, suitable for various fuel types. National Flues is rarely beaten on price and offers reliable delivery across the UK. Trade accounts available.
The VIT-Smooth Increaser Ø 100-125mm is used to connect flue systems of different diameters for appliances using gas, oil, or solid fuel.
National Flues is a leading supplier of fireplaces and flues, catering to both retail and trade customers across the UK. Known for competitive pricing and dependable delivery, we support secure online payments and offer trade accounts.
