Top Insert Sleeve with Rain Cap - Ø 150
At a Glance
- - Superior rain protection for your chimney system
- - Precision-engineered 316L stainless steel construction
- - Built-in protection sleeve for simplified installation
- - Withstands temperatures up to 600°C
- - Compatible with wood, oil, gas, and smokeless coal appliances
- - Fully compliant with Building Regulations Document J

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 with Rain Cap - Ø 150mm is a critical component in your MI-FLEX 316 and 904 flexible flue liner system. This precision-engineered accessory offers robust rain protection while fitting seamlessly into your existing setup. It effectively prevents water and debris infiltration, safeguarding your chimney against potential damage and inefficiency.
Designed for appliances operating up to 600°C (T600 designation), it's suitable for use with wood, smokeless coal, gas, and oil. Building Regulations Document J stipulates that flexible flue liners must be fully enclosed within a masonry chimney—our product adheres strictly to these requirements, ensuring safety and durability. The built-in protection sleeve simplifies installation and provides a secure attachment for the flexible liner.
Maintenance is a breeze with easy access for sweeping and inspections. Remember to consult a HETAS registered sweep for solid fuel systems.
SKU: 20-150-PSRC
Technical Specifications | |
---|---|
SKU | 20-150-PSRC |
Diameter | u00d8 150mm |
Material | 316L Stainless Steel |
Max Temperature | 600u00b0C |
Compatible Fuels | Wood, Oil, Gas, Smokeless Coal |
Approvals | HETAS, CE |
System | MI-FLEX Accessories MF20 |
Finish | Natural / Stainless Steel |
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.
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National Flues Ltd Verdict
The Top Insert Sleeve with Rain Cap - Ø 150mm is an excellent addition to your chimney system. At National Flues, we ensure top-notch reliability and comprehensive nationwide delivery. Whether you're in retail or trade, we've got you covered with competitive prices and superior products.
The Top Insert Sleeve with Rain Cap is designed to provide rain protection and secure the flexible flue liner within the chimney, ensuring optimal performance and safety.
National Flues is a leading supplier of fireplaces and flues in the UK, offering exceptional quality, competitive prices, and reliable nationwide delivery for both retail and trade customers.
