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TWPro MB - Insulation Cover Plate - Ø 125 (37-125-104)

National Flues presents the TWPro MB Insulation Cover Plate Ø 125, an ideal accessory for solid fuel, oil and gas appliances. This premium insulation cover plate, designed to integrate seamlessly with TWPro chimney systems, offers durable construction and advanced thermal properties. Enhance your chimney performance and safety with one of the market leading insulation accessories that meets HETAS and CE standards.
£27.99
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At a Glance

    Durable 0.4mm stainless steel construction (inner 316L, outer 304 with high-temperature black finish)
    Compressed rockwool insulation (200kg/m3) for enhanced thermal efficiency
    HETAS approved and CE marked for trusted safety compliance
    Compatible with solid fuel and gas/oil appliances including woodstoves, gas coal-effect fires, oil and gas boilers
    Supplied locking band for secure and straightforward installation
    Designed specifically for integration with third-party terminals

Please Note: All dimensions refer to the internal diameter of flues. If unsure, please call 01670 206999 to ensure you choose the correct products.

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Have Questions?
Phone: 01670 206999
Email: [email protected]

The TWPro MB Insulation Cover Plate Ø 125 is specifically designed for use with solid fuel and gas/oil appliances, including woodstoves, gas coal-effect fires, oil boilers, and gas boilers. Constructed from high-quality materials, the outer skin is made from 0.4mm-thick 304 stainless steel, coated with a high-temperature black finish for unparalleled durability. The inner skin, also 0.4mm thick, is crafted from 316 grade stainless steel, providing excellent heat resistance and longevity.

The insulation layer is made from compressed rockwool with a density of 200kg/m3, ensuring optimal thermal efficiency. All components are fully welded for maximum strength and integrity.The TWPro MB insulation cover plate is HETAS approved and CE marked, meeting the highest safety standards. It carries the designation numbers EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 P1 W V2 L50040 O20.

Installation is straightforward, with parts secured using a supplied locking band. The required distance from combustibles is 50mm, ensuring safe operation. This cover plate is essential when using a third-party terminal, although responsibility for fixing the terminal to the TWPro system lies with the installer.

SKU: 37-125-104

Technical Specifications
SKU37-125-104
Sizeu00d8 125
Inner Material316L Stainless Steel, 0.40mm
Outer Material304 Stainless Steel with high temperature black coating, 0.40mm
InsulationCompressed rockwool, 200kg/m3
ApprovalsHETAS / CE
DesignationEN1856-1 T600 N1 W V2 L50040 G50 ; EN1856-1 T200 P1 W V2 L50040 O20
InstallationSecured with supplied locking band, maintain 50mm distance from combustibles
Fuel CompatibilityWood, Oil, Gas, Low sulphur coal
Ensure that you mount the insulation cover plate on a stable, level surface with a clear 50mm clearance from any combustible materials, such as wood or plasterboard. Use the supplied locking band to secure the components firmly. When integrating the cover plate with third-party terminals, please note that fixing the terminal to the TWPro system is the installer’s responsibility. Always follow the manufacturer’s guidelines and safety instructions during installation to ensure a secure and compliant setup.

It's compatible with solid fuel and gas/oil appliances such as woodstoves, gas coal-effect fires, oil boilers, and gas boilers.

The outer skin is made from 0.4mm 304 stainless steel with a high-temperature black finish, while the inner skin is 0.4mm 316 grade stainless steel. The insulation is made from compressed rockwool with a density of 200kg/m3.

Yes, it is HETAS approved and CE marked with designation numbers EN1856-1 T600 N1 W V2 L50040 G50 and EN1856-1 T200 P1 W V2 L50040 O20.

The required distance is 50mm from the outside of the flue to any combustible material such as wood or plasterboard.

The parts are secured together using a supplied locking band.

While the cover plate is designed for use with third-party terminals, the responsibility for fixing the terminal to the TWPro system lies with the installer.

Both the inner and outer skins are made from 0.4mm thick stainless steel.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Tuesday, May 20th. Delivery times of products not in our warehouses depend on product availability and shipping. If you need a definitive delivery time give us a call. If you need faster stove or fireplace delivery please also give us a call. We can sometimes 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 on a retail basis. Give us a call if you find it cheaper and want to buy from us.

Read our review in our TWPro MB - Insulation Cover Plate - Ø 125 buyers guide

Upgrade your chimney system today with our TWPro MB Insulation Cover Plate - ensure safety and performance!

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