Screw-FIX Joiner - Ø 125 (25-125-J)
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Fast deliveryMonday, November 17th*
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Best PriceCall us to beat any price you found online.
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At a Glance
- Compatible with MI-FLEX 316 and 904 multi-fuel liners
- Engineered for temperatures up to 600°C (T600 designation)
- Constructed from durable 316L stainless steel for longevity
- Meets Building Regulations Document J for safe chimney installations
- Designed for 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: sales@nationalflues.com
- Details
- Specs
- Install/Packs
- FAQs
The Screw-FIX Joiner - Ø 125 is a critical accessory meticulously engineered for use with MI-FLEX 316 and 904 flexible flue liners. Designed to create a complete chimney system, this tool ensures seamless joining of two lengths of multi-fuel liner, making it an excellent choice for installations where the liner length exceeds the standard flex available. Ideally suited for use on solid fuel appliances burning wood (with less than 20% moisture), smokeless coal, gas, and oil, this joiner can withstand temperatures up to 600°C (T600 designation).
It adheres to Building Regulations Document J, which mandates that flexible flue liners be entirely enclosed within a masonry chimney. Note: The joiner is specifically for multi-fuel liners and is not suitable for gas liners.
SKU: 25-125-J
Delivery Information* +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Monday, November 17th. This is based on current lead times. Bear in mind that it is a busy time of year. If you need a product delivered by a specific time in the next 7 days, then please give us a call on 01670 206 999. Visit our Shipping Information page for more information.
About National Flues Ltd +
We began over 30 years ago as a fireplace shop in the North East. We now supply hundreds of trade professionals and thousands of retail customers, all across the UK, every month. We are still a family owned business, lead by the MD Neil, and always try our best to deliver the best possible experience. We also price match, so give us a call if you find this cheaper and want to buy from us. Visit our about us page to read a bit more.
This is us — real advice over the phone, or at the counter, and real stock in our warehouse.
| Technical Specifications | |
|---|---|
| SKU | 25-125-J |
| Dimensions | Ø 125mm |
| Material | 316L Stainless Steel |
| Temperature Rating | Up to 600°C |
| Fuel Compatibility | Wood, Smokeless Coal, Gas, Oil |
| Standards | CE, HETAS, BSEN 1856-2 T600 |
| System | MI-FLEX Accessories MF20 |