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Register Plate Adaptor - Ø 125 (20-125-RPA)

Discover the superior Register Plate Adaptor - Ø 125 from National Flues, a pivotal component for any modern chimney system. This high-performance adaptor, designed specifically for MI-FLEX flexible flue liners, ensures a secure, gas-tight seal and smooth transition between the base register plate and the flue liner. Perfect for both trade and retail customers, this product stands out as a reliable, cost-effective solution that not only meets but exceeds current safety and performance standards. Enhance your chimney setup with this top-grade accessory, ideal for wood, oil, gas, and smokeless coal appliances.
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£49.99
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At a Glance

  • Secure, gas-tight connection for MI-FLEX flexible flue liners
  • Crafted from durable 316L stainless steel
  • Designed to seamlessly integrate beneath a register plate
  • Suitable for wood, oil, gas, and smokeless coal appliances
  • Meets stringent Building Regulations Document J requirements

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.
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Price Match Guarantee: If you find the same product cheaper within 48 hours, we’ll match it and refund the difference.

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

The Register Plate Adaptor - Ø 125 is an expertly designed installation fitting from the MF20 MI-FLEX accessory range. Crafted for compatibility with MI-FLEX 316 and 904 flexible flue liners, this adaptor ensures a robust and secure connection, integral to achieving a full chimney system. Fitted below the register plate, it facilitates a smooth transition from the single-wall connection to the flexible liner, providing a gas-tight seal that's imperative for optimal safety and performance.

Designed to meet Building Regulations Document J, it is suitable for use with wood (less than 20% moisture), smokeless coal, gas, and oil appliances up to 600°C (T600 designation). The adaptor’s maintenance is straightforward but essential, requiring annual inspection and cleaning to maintain peak performance. This high-quality product guarantees both reliability and long-term durability, making it a standout choice for your flue system.

SKU: 20-125-RPA

Technical Specifications
Product NameRegister Plate Adaptor - u00d8 125
SKU20-125-RPA
Material316L Stainless Steel
Colour FinishNatural / Stainless Steel
Approved FuelsWood (less than 20% moisture), Oil, Gas, Smokeless coal
Temperature RatingUp to 600u00b0C (T600 designation)
Compatible WithMI-FLEX 316 & 904 flexible flue liners
ApprovalsCE / HETAS
SystemMI-FLEX Accessories MF20 0.6mm 316 S/S
• Position the adaptor directly beneath the register plate to facilitate a smooth transition to the MI-FLEX flexible flue liner above. • Ensure that the connection achieves a gas-tight seal by using approved fixing materials such as fire cement, ceramic rope, high-temperature sealant, or tape. • Follow Building Regulations Document J by installing only within a masonry enclosed system; non-masonry enclosures (e.g., timber or plasterboard) are not acceptable. • Maintain regular annual inspections and cleaning to uphold performance and safety standards. • Exercise caution during installation to avoid any damage to the register plate or chimneys components.

The Register Plate Adaptor - Ø 125 is used to create a secure connection between the chimney’s base register plate and the MI-FLEX flexible flue liner, ensuring a gas-tight seal and compliance with Building Regulations.

Yes, it is suitable for use with wood (less than 20% moisture), smokeless coal, gas, and oil appliances, with a temperature rating of up to 600°C (T600 designation).

The chimney system should be inspected and cleaned at least once a year. For solid fuel appliances, it is recommended to sweep the chimney twice a year, at the beginning and end of the heating season.

To secure the bottom fixing, you can use fire cement, ceramic rope, high-temperature sealant, or tape to ensure a gas-tight seal.

No, Building Regulations Document J requires that flexible flue liners are fully enclosed within a masonry chimney. Non-masonry enclosures like timber or plasterboard are not acceptable.

The round cover plate is designed to cover the hole made in the register plate, providing a neat and professional finish to the installation.

For solid fuel applications, a list of HETAS registered sweeps can be found at www.hetas.co.uk. Competent sweeping is essential to maintain the efficiency and safety of your chimney system.
Delivery Information +

We work relentlessly to ensure you get your order fast. Estimated delivery for this product is Wednesday, April 30th. 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 on a retail basis. Give us a call if you find it cheaper and want to buy from us.

Read our review in our Register Plate Adaptor - Ø 125 buyers guide

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Don’t compromise on safety – secure your Register Plate Adaptor now for a durable and efficient chimney system.

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