Screw-FIX Top Hat Adaptor - Ø 175
At a Glance
- Designed for MI-FLEX flexible flue liners Constructed from premium 316L stainless steel for durability Provides a secure, gas-tight connection Built-in round cover plate ensures a neat finish Engineered for use with wood, smokeless coal, gas, and oil appliances

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 Screw-FIX Top Hat Adaptor - Ø 175 is an essential component for constructing a secure and efficient chimney system. Specifically designed for use with MI-FLEX 316 and 904 flexible flue liners, this adaptor ensures a strong, gas-tight seal. Suitable for appliances running up to 600°C, it can handle wood with less than 20% moisture, smokeless coal, gas, and oil.
Regulations require flexible flue liners to be entirely enclosed inside a masonry chimney, ensuring both safety and efficacy. To guarantee a perfect transition from the connecting flue system to the flexible liner, the adaptor must be securely fitted at the base of the chimney below the register plate, offering a clean and professional finish. Regular maintenance and sweeping by a competent person are recommended at least once a year, especially for solid fuel systems.
Follow HETAS guidelines for a safe, long-lasting chimney.
SKU: 25-175-THA
Technical Specifications | |
---|---|
SKU | 25-175-THA |
Diameter | u00d8 175 mm |
Material | 316L Stainless Steel |
Temperature Rating | Up to 600u00b0C |
System | MI-FLEX Accessories MF20 |
Approvals | CE / HETAS |
Fuel Compatibility | Wood, Smokeless Coal, Gas, Oil |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Friday, April 4th. 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.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
At National Flues, we highly recommend the Screw-FIX Top Hat Adaptor - Ø 175 for its reliability and seamless fit with MI-FLEX flexible flue liners. We deliver nationwide and cater to both retail and trade customers, offering prices that are rarely beaten.
The Screw-FIX Top Hat Adaptor is designed to connect a flexible flue liner within a masonry chimney, ensuring a secure and gas-tight transition between components.
National Flues is a trusted supplier of fireplaces and flue systems across the UK, serving both retail and trade customers with high-quality products and reliable delivery.
