TWPro MB - Tee Cap c/w Drain - Ø 125
At a Glance
- - Premium 304 & 316 Stainless Steel construction
- - High-temperature black coated outer skin
- - Includes a 10mm threaded drain for condensation removal
- - Fully welded for enhanced durability
- - HETAS approved & CE marked
- - Designed for both solid fuel and gas/oil appliances

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 Tee Cap with Drain - Ø 125mm is a versatile solution for sealing the bottom or unused end of a 90/135 Tee in your chimney flue system. Crafted for use with solid fuel, gas/oil appliances such as woodstoves, gas-fired coal effect fires, and various boilers, this tee cap ensures efficient and safe operation. Constructed with premium materials, the outer skin boasts a 304 stainless steel build, 0.4mm thick, and finished with a high-temperature black coating.
The inner skin is made from durable 316 grade stainless steel, also 0.4mm thick, while the insulation consists of compressed rockwool with a density of 200kg/m³. All components are fully welded, ensuring robustness and longevity. This TWPro cap includes a 10mm threaded drain designed to connect a drain pipe for removing excess condensation, making it practical and effective.
The required installation distance from combustibles is 50mm. HETAS approved and CE marked, the TWPro Tee Cap meets stringent safety and performance standards. Designation numbers: EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 P1 W V2 L50040 O20, verify its compliance with European norms.
Installation is straightforward, with parts secured using a supplied locking band. Maintain a 50mm clearance from flammable materials for optimal safety.
SKU: 37-125-037
Technical Specifications | |
---|---|
SKU | 37-125-037 |
Dimensions | u00d8125mm, with a 50mm clearance from combustibles |
Materials | Outer: 304 Stainless Steel (0.40mm thick, high-temperature black coated); Inner: 316 Stainless Steel (0.40mm thick) |
Insulation | Compressed Rockwool (200kg/mu00b3 density) |
Drain | 10mm threaded drain for drainage pipe connection |
Approvals | HETAS / CE |
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 TWPro MB Tee Cap c/w Drain - Ø 125mm is an outstanding product for those seeking high performance and reliability. With our nationwide delivery and commitment to serving both retail and trade customers, you can trust National Flues for quality and value.
The TWPro MB Tee Cap with Drain - Ø 125mm is designed to effectively cap off the bottom or unused end of a chimney flue system's tee, ensuring the efficient removal of condensation and maintaining safe and effective operation of solid fuel and gas/oil appliances.
National Flues is a leading supplier of fireplaces and flues across the UK, renowned for reliability, competitive pricing, and quality service to both retail and trade customers nationwide. Committed to delivering excellence, we ensure secure online payments and punctual delivery.
