MI-FLEX Adaptor - Ø 300 (20-300-MAE)
At a Glance
- Constructed from high-quality 316L stainless steel (0.6mm thick)
Seamlessly connects ridged single wall flue systems to MI-FLEX flue liners
Provides a gas-tight seal when installed correctly
Withstands temperatures up to 600°C (T600 designation)
Suitable for wood (with <20% moisture), oil, gas, and smokeless coal
Compliant with BSEN 1856-2 standards and Building Regulations Document J
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 MI-FLEX Adaptor - Ø 300 is a high-quality, 0.6mm 316 stainless steel fitting designed to seamlessly connect a ridged single wall flue system to a MI-FLEX flexible flue liner of the same diameter. Essential for creating a complete and efficient chimney system, this adaptor ensures a gas-tight seal when correctly installed inside an existing masonry chimney. It's suitable for use on a variety of fuel sources including wood (with less than 20% moisture), smokeless coal, gas, and oil, and can withstand temperatures up to 600°C (T600 designation).
To comply with Building Regulations Document J, it’s vital that the flexible flue liner is fully enclosed within a masonry chimney, never boxed in with timber or plasterboard. This adaptor, part of the MF20 MI-FLEX accessories range, makes it easy to transition between your flue system and liner, enhancing both safety and efficiency.
SKU: 20-300-MAE
| Technical Specifications | |
|---|---|
| SKU | 20-300-MAE |
| Material | 316L Stainless Steel, 0.6mm |
| Size | Ø 300 mm |
| Temperature Rating | Up to 600°C (T600 designation) |
| Approvals | HETAS / CE |
| Fuels | Wood (<20% moisture), Smokeless Coal, Gas, Oil |
| Designation | BSEN 1856-2 T600 N1 W V2 L50012 G |
| System | MI-FLEX Accessories MF20 |
