TWPro MB - Rain Cap - Ø 150
At a Glance
- - Superior corrosion resistance with 304 and 316 stainless steels
- - High temperature black coated outer finish for enhanced durability
- - Compatible with various fuels: wood, oil, gas, and low sulphur coal
- - HETAS approved and CE marked for reliable safety standards
- - Easy, secure installation using a supplied locking band
- - Perfect 150mm diameter designed for standard 6-inch chimney flues
- - Fully welded construction for superior strength

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.
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 TWPro MB Rain Cap - Ø 150 is an excellent solution designed to prevent water ingress into your flue system. This rain cap is suitable for use with solid fuel and gas/oil appliances such as woodstoves, gas coal effect fires, oil boilers, and gas boilers. Constructed with an outer skin made from 304 stainless steel and coated in a high-temperature black finish, this cap combines durability with aesthetic appeal.
The inner skin consists of 316-grade stainless steel, ensuring maximum resistance to corrosion while the 0.4mm thickness provides added robustness. The insulation comprises compressed rockwool, giving a density of 200kg/m3, and all parts are fully welded for superior strength. The product is HETAS approved and CE marked, with the designation numbers EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 P1 W V2 L50040 O20.
Installation is straightforward with the use of a supplied locking band, and users need to maintain a minimum distance of 50mm from any combustible materials.
SKU: 37-150-090
Technical Specifications | |
---|---|
Designation | EN1856-1 T600 N1 W V2 L50040 G50; EN1856-1 T200 P1 W V2 L50040 O20 |
Outer Material | 304 Stainless Steel, High Temperature Black Coated, 0.40mm thick |
Inner Material | 316L Stainless Steel, 0.40mm thick |
Insulation | Compressed Rockwool, 200kg/m3 density |
Fuel Compatibility | Wood, Oil, Gas, Low sulphur coal |
Approvals | HETAS, CE |
Minimum Distance To Combustibles | 50mm |
Diameter | 150mm (6-inch standard) |
Installation Accessories | Supplied locking band |
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.
Compatible and other products that may be of interest...
National Flues Ltd Verdict
The TWPro MB Rain Cap Ø 150 is a reliable choice for protecting your chimney flue from water ingress. With top-notch construction and HETAS approval, it stands out in quality and performance. National Flues offers nationwide delivery, serving both retail and trade customers with unbeatable prices and secure payments.
The TWPro MB Rain Cap is designed to protect your chimney flue from water ingress, ensuring the longevity and efficiency of your solid fuel and gas/oil appliances.
National Flues is a leading supplier of fireplaces and flues in the UK, known for reliable delivery, unbeatable prices, and serving both retail and trade customers with secure online payments available.
