Top Insert Sleeve - Ø 125
At a Glance
- - Made from robust 316L stainless steel
- - Natural / Stainless Steel finish for longevity
- - Withstands temperatures up to 600°C (T600)
- - Certified to HETAS and CE standards
- - Compatible with wood (under 20% moisture), oil, gas, and smokeless coal
- - Designed for use with MI-FLEX Accessories MF20 systems
- - Essential for supporting the weight of flexible flue liners
- - Works in tandem with Top Plate and Top Clamp
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 Top Insert Sleeve - Ø 125 is an essential component for anyone installing or maintaining a chimney system using MI-FLEX 316 and 904 flexible flue liners. This expertly designed accessory slides seamlessly into the flexible chimney liner at the top of your installation. Used in conjunction with a Top Plate and Top Clamp, it ensures that the flue liner's weight is securely supported without compromising its integrity.
This robust sleeve is suitable for a range of fuel types including wood with less than 20% moisture, smokeless coal, gas, and oil, and can withstand temperatures up to 600°C (T600). According to Building Regulations Document J, a flexible flue liner must be entirely enclosed within a masonry chimney, making the Top Insert Sleeve an indispensable part of your setup. Proper maintenance is crucial; sweeping and inspection should be conducted at least annually by a qualified professional to ensure longevity and performance.
SKU: 20-125-PS
| Technical Specifications | |
|---|---|
| Material | 316L Stainless Steel |
| Colour Finish | Natural / Stainless Steel |
| Temperature Rating | Up to 600u00b0C (T600) |
| Approvals | HETAS / CE |
| Compatible Fuels | Wood (<20% moisture), Oil, Gas, Smokeless Coal |
| System | MI-FLEX Accessories MF20 |
| Dimensions | u00d8 125mm |
| Designation | BSEN 1856-2 T600 N1 W V2 L50012 G |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, April 8th. 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
The Top Insert Sleeve - Ø 125 is a must-have for anyone looking to ensure the integrity and support of their chimney system. Here at National Flues, we pride ourselves on providing top-quality products at unbeatable prices. Whether you're a retail or trade customer, you can count on our reliable nationwide delivery.
The Top Insert Sleeve - Ø 125 is designed to support the weight of a flexible chimney liner at the top of a masonry chimney stack, ensuring stability and integrity.
National Flues is a premier supplier of fireplaces and flues, offering reliable and competitively priced products to retail and trade customers across the UK. Our commitment to quality and dependable delivery makes us a preferred choice in the industry.
