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Screw-FIX Long Tail Increaser - Ø 175-200mm

In Stock

This 0.6mm 316 stainless steel long tail adaptor is designed to be a transitional joint connecting a rigid single-wall flue system to MI-FLEX. This adaptor increases up to 25mm from the single wall to the flexible flue liner, ensuring a seamless and efficient connection.

£61.99 incl VAT

The Screw-FIX Long Tail Increaser - Ø 175-200mm is a premium accessory in our MI-FLEX range, expertly designed for seamless integration with both MI-FLEX 316 and 904 flexible flue liners. Crafted from 0.6mm 316-grade stainless steel, this durable adaptor ensures a smooth transition from rigid single-wall connecting flue systems to flexible flue liners, offering a 25mm increase. Compliant with Building Regulations Document J, this increaser must be installed within a masonry chimney. Suitable for use with wood (moisture <20%), smokeless coal, gas, and oil appliances, it withstands temperatures up to 600°C (T600 designation). For a secure and gas-tight installation, it is advisable to use fire cement, ceramic rope or tape, or high-temperature sealant. Regular maintenance, including annual sweeping by a competent person, is essential to ensure optimal performance and safety. Avoid using chemical cleaners or mild steel tools to prevent damage.

  • SKU: 25-175-MRLT
  • Item: Screw-FIX Long Tail Increaser - u00d8 175-200mm
  • Designation:: BSEN 1856-2 T600 N1 W V2 L50012 G
  • System:: MI-FLEX Accessories MF20
  • Material:: 316L
  • Colour Finish:: Stainless Steel / NATURAL
  • Fuels:: Wood, Oil, Gas, Smokeless coal
  • Approvals::
  • : CE / HETAS

What is it for?

The Screw-FIX Long Tail Increaser is designed to smoothly transition between rigid single-wall flue systems and MI-FLEX flexible flue liners.

Brand Summary

National Flues is a leading supplier of high-quality fireplaces and flues in the UK, offering unbeatable prices, reliable delivery services, and specialised solutions for both retail and trade customers.

National Flues Verdict

The Screw-FIX Long Tail Increaser - Ø 175-200mm stands out with its high-quality construction and reliable performance. Perfect for both retail and trade customers, this product ensures a smooth transition between flue systems. National Flues offers unbeatable prices and dependable nationwide delivery, making it an excellent choice for your chimney needs.

Our Rating
9.8/10

FAQs

The increaser is made from high-quality 0.6mm 316 stainless steel, ensuring durability and reliable performance.

Yes, it complies with Building Regulations Document J, which mandates that flexible flue liners be installed entirely within a masonry chimney.

The Screw-FIX Long Tail Increaser is suitable for use with wood (moisture content <20%), smokeless coal, gas, and oil appliances.

The increaser can withstand temperatures up to 600°C (T600 designation).

To ensure a gas-tight seal, use fire cement, ceramic rope or tape, or high-temperature sealant where the increaser connects to both the flexible and rigid flue systems.

The chimney system should be inspected and maintained at least once a year. For solid fuel appliances, sweeping twice a year is recommended.

No, chemical cleaners or mild steel tools should not be used as they can damage the stainless steel components. Instead, use appropriate sweeping tools and methods.