TWPro MB - Storm Collar - Ø 125
At a Glance
- 304 & 316 grade stainless steel construction for durability
- High-density rockwool insulation (200kg/m³ for TWPro, 128kg/m³ for KC) for excellent thermal performance
- HETAS approved and CE marked for safety compliance
- Easy installation with a secure locking band mechanism
- Minimal clearance requirement (50mm for TWPro, 60mm for KC) enhances design flexibility

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 Storm Collar Ø 125 is specifically designed for use with solid fuel and gas/oil appliances, like woodstoves, gas coal effect fires, and oil and gas boilers. Constructed with an outer skin of 304-grade stainless steel and an inner skin of 316-grade stainless steel, both 0.4mm thick, this storm collar ensures durability and resilience. The compressed rockwool insulation boasts a density of 200kg/m³ for TWPro and 128kg/m³ for KC, offering excellent thermal performance.
With a required distance of only 50mm to combustibles for TWPro and 60mm for KC, this product meets rigorous safety standards. It is fully HETAS approved and CE marked, adhering to EN1856-1 standards. The TWPro Twin Wall Insulated Chimney parts are easily and securely connected using a locking band, making installation straightforward and reliable.
Complete the watertight seal by running a bead of silicone around the top edge of the collar and the flue.
SKU: 58-125-082
Technical Specifications | |
---|---|
SKU | 58-125-082 |
Flue Diameter | u00d8 125mm |
Outer Material | 304-grade stainless steel (0.4mm thick) |
Inner Material | 316-grade stainless steel (0.4mm thick) |
Insulation | Compressed rockwool (200kg/mu00b3 for TWPro, 128kg/mu00b3 for KC) |
Minimum Clearance To Combustibles | 50mm (TWPro) or 60mm (KC) |
Approvals | HETAS approved, CE marked, EN1856-1 compliant |
Installation Method | Locking band connection with a silicone bead for a watertight finish |
Delivery Information +
We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Thursday, April 3rd. 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 Storm Collar Ø 125 is an essential component for ensuring a watertight seal for your chimney system. With high-grade stainless steel construction and HETAS approval, it's the perfect choice for both retail and trade customers. Plus, enjoy reliable nationwide delivery with National Flues.
The TWPro MB Storm Collar Ø 125 is used to ensure a watertight seal for flues passing through the roof while protecting the flashing from extreme weather conditions.
National Flues is a leading supplier of high-quality fireplaces and flues across the UK, renowned for unbeatable prices, reliable delivery, and exceptional service to both retail and trade customers.
