Increasing MI-FLEX Adaptor - Ø 125-Ø 150 (20-125-MR)
At a Glance
- Premium 316L stainless steel construction
Robust 0.6mm thickness for enhanced durability
Heat resistance rated up to 600°C (T600)
Seamless connection between single wall flue and MI-FLEX liner
Compliant with Building Regulations Document J
Versatile for wood, oil, gas, and smokeless coal appliances
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, July 1st. This is based on current delivery times for this product. Delivery for products not in our warehouses can be delayed because of third party carriers. If you need a stove, or other bulky product, to be delivered by a specific time in the next 7 days then please give us a call. We can sometimes 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 and you can read in our blog about they types and terms and conditions for warranties. Mi-Flex flue liner, for example, comes with a lifetime guarantee. Give us a call if you want to know about a specific warranty. 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, on a retail basis. Give us a call if you find it cheaper and want to buy from us.
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 Increasing MI-FLEX Adaptor - Ø 125-Ø 150 is a high-quality 0.6mm 316 stainless steel accessory designed for seamless transition and connection between a single wall connecting flue system and an MI-FLEX flexible flue liner. Constructed to withstand temperatures up to 600°C (T600 designation), it is suitable for use with wood (less than 20% moisture), smokeless coal, gas, and oil appliances. This adaptor is essential for forming a complete chimney system in compliance with Building Regulations Document J, requiring a fully enclosed masonry chimney.
Do not use non-masonry enclosures like timber or plasterboard. Ensuring a gas-tight seal at the bottom fixing, the connection should be secured within the masonry chimney, utilizing fire cement, ceramic rope or tape, or high-temperature sealant. Regular sweeping and maintenance by a competent person are vital, especially for solid fuel appliances.
Use only appropriate cleaning tools, avoiding chemical cleaners and mild steel tools. Recommended sweeping twice a year ensures the longevity and safety of your chimney system.
SKU: 20-125-MR
| Technical Specifications | |
|---|---|
| Model | 20-125-MR |
| Material | 316L Stainless Steel |
| Thickness | 0.6mm |
| Heat Rating | T600 (Up to 600u00b0C) |
| Finish | Natural / Stainless Steel |
| Compatible Fuels | Wood (with less than 20% moisture), Oil, Gas, Smokeless Coal |
| Certifications | HETAS / CE |
| System | MI-FLEX Accessories MF20 |
| Installation Method | Secured within a masonry chimney using fire cement, ceramic rope or tape, or high-temperature sealant |
