Midtherm 45 Elbow Stainless Twin Wall Flue

The Midtherm HTS Twin Wall 45° Angle is a durable, insulated chimney component designed for medium to high-temperature applications, suitable for solid fuel, multi-fuel, gas, oil, and biomass installations.

  • 5″ or 6″ diameters
  • Stainless steel chrome finish
  • Push fit connection (Comes with 1 band)
  • Suitable for solid fuel and gas/ oil

Precision-engineered with high-quality stainless steel, a push-fit connection system, and a sleek modern finish, it offers reliable performance, versatile compatibility, and a 10-year warranty for registered installations.

Trade professional? Contact us for bulk/ trade prices

Estimated Delivery: 3-5 Working Days

Please enquire for purchasing, pricing, delivery or installation

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With over 20 years’ experience, our in-house team can take care of everything from survey and design through to installation and aftercare.

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    • 14 day no-hassle returns
    • Full manufacturer warranty included
    • Family run since 2003
    • Installation by our in-house team Learn more →
    • Home survey & expert consultation Book now →
    • Dedicated aftercare & ongoing support

     

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    Midtherm 45 Elbow Stainless Twin Wall Flue

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      Delivery, Click & Collect & Returns Information

      Collection Information

      We offer free Click & Collect on all orders from our Reading,
      Berkshire showroom and warehouse at RG7 2PQ.

      Please select “Click & Collect: Berkshire Showroom (RG7 2PQ)”
      at checkout to reserve your item for collection.

      If the Add to Basket button is not available, please call
      0118 970 1717
      or email
      info@bonfire.co.uk
      and our team can assist with placing your order.

      Please do not travel to collect your order until we have confirmed that your goods
      are ready. We recommend contacting us in advance to confirm stock availability,
      collection times and any loading requirements.

      Please ensure you arrive in a suitable vehicle for the size and weight of the goods
      being collected. Our team can assist with loading where safe and practical, but the
      customer is responsible for ensuring the goods are safely secured for transport.


      View our showroom information


      Delivery Information

      We offer a combination of standard parcel delivery and
      dedicated direct delivery, depending on the products ordered
      and your delivery location.

      Smaller products that are suitable for parcel delivery can be sent throughout our
      available UK delivery areas.

      Large, heavy or fragile products such as fireplaces, hearths, stone surrounds and
      larger fires normally require our dedicated delivery service.

      Delivery options and charges are calculated at checkout based on your
      postcode, order value and the products in your basket.

      Free Dedicated Delivery

      • Free dedicated delivery over £500 within 25 miles.
      • Free dedicated delivery over £1,000 from 25–50 miles.
      • Free dedicated delivery over £1,000 to London.
      • Free dedicated delivery over £1,000 from 50–100 miles.
      • Free dedicated delivery over £2,000 from 100–150 miles.
      • 150+ miles: tailored dedicated delivery quotation required.

      Free dedicated delivery applies to our standard
      one-person Essential Dedicated Delivery – Customer Unloads
      service unless stated otherwise.

      For locations over 150 miles away, we can often still arrange delivery.
      Please contact us for a tailored quotation. Depending on the order value and
      delivery requirements, we may be able to reduce or absorb part or all of the
      delivery cost.

      Standard Parcel Delivery

      Standard parcel delivery is available throughout our UK delivery areas on eligible products.

      This service is intended for smaller items such as selected accessories, spare parts,
      paints and other products suitable for a parcel carrier.

      If your order contains large, heavy or fragile products that are not suitable for parcel
      delivery, the parcel option will not be available and an appropriate dedicated delivery
      or tailored quotation will be required.

      Dedicated Delivery Service

      Where possible, we use a dedicated direct delivery service rather than
      a general pallet network for larger and more fragile products.

      This reduces unnecessary handling during transit and is particularly beneficial for
      fireplaces, hearths, natural stone, marble, slate and other fragile goods.

      Unless an upgraded delivery service has been specifically quoted and agreed, our standard
      dedicated service is a one-person delivery service and the customer is
      responsible for safely unloading the goods from the vehicle.

      What Our Free Dedicated Delivery Includes

      Unless otherwise agreed in writing, free dedicated delivery is normally made using a
      suitable small van or Sprinter-style vehicle.

      This means:

      • the goods are delivered to your address or the nearest safely accessible delivery point;
      • delivery is made by one driver;
      • the receiver is responsible for safely unloading the goods from the vehicle;
      • the driver may assist where safe and practical, but this cannot be guaranteed;
      • delivery does not include carrying goods into the property;
      • tail-lift delivery is not included;
      • two-person delivery is not included;
      • white-glove delivery is not included;
      • unpacking, internal placement and installation are not included.

      For heavy, bulky or fragile products, please make sure suitable unloading assistance
      is available when your delivery arrives.

      Tail-Lift, Two-Person & Bespoke Delivery

      Additional delivery services may be available at extra cost depending on the product,
      location and access requirements.

      Please contact us before dispatch if you require:

      • tail-lift delivery;
      • additional unloading assistance;
      • two-person delivery;
      • delivery onto a driveway or into a garage;
      • white-glove delivery;
      • internal placement;
      • restricted-access delivery;
      • timed delivery;
      • delivery to a building site or commercial address.

      Please call
      0118 970 1717
      or email
      info@bonfire.co.uk
      for a tailored quotation.

      Delivery Timescales

      For stock products, delivery may often be available within approximately
      2–3 working days, depending on the product, delivery method
      and vehicle availability.

      Some products will take longer, particularly where they are:

      • made to order;
      • bespoke;
      • supplier stocked;
      • awaiting manufacturer availability;
      • subject to a stated lead time.

      Once your order has been placed, we will keep you informed of the estimated delivery
      timeframe and advise you of any known delays.

      Please do not book installers, fitters or other tradespeople until your goods
      have been delivered and checked
      , as unexpected supplier or transport delays
      can occasionally occur.

      Access Requirements

      Please tell us before dispatch if there are any delivery access restrictions, including:

      • narrow lanes;
      • steep or gravel driveways;
      • low bridges;
      • parking restrictions;
      • steps;
      • restricted turning space;
      • weight restrictions;
      • controlled access;
      • difficult access for vans or lorries.

      The driver will deliver to the nearest safe and reasonably accessible point.

      For health, safety and insurance reasons, our standard delivery service does not include
      moving heavy goods inside your home unless an appropriate upgraded service has been
      specifically agreed in advance.

      Checking Goods on Delivery

      Please inspect your goods as soon as possible when they arrive.

      Where practical, check the condition of the goods while the driver is present and note
      any visible damage on the delivery documentation.

      If there is visible transport damage, please take photographs and notify us as soon as
      possible, ideally within 48 hours of delivery, so that we can investigate promptly.

      If you are unavailable at an agreed dedicated delivery time, a re-delivery charge may apply.

      Nothing in these delivery terms affects your statutory consumer rights.

      Delivery Coverage

      We currently sell and deliver within our available United Kingdom delivery areas only.

      We do not currently deliver to the Isle of Wight or addresses outside
      the United Kingdom.

      Dedicated delivery is available through our standard delivery zones up to approximately
      150 miles from our Reading showroom.

      For locations over 150 miles away, a tailored dedicated delivery quotation
      is required.

      Standard parcel delivery remains available throughout our UK delivery areas where the
      products ordered are eligible for parcel delivery.

      For delivery questions or a tailored quotation, please call
      0118 970 1717
      or email
      info@bonfire.co.uk.


      Learn more about our delivery information


      Returns & Exchange Information

      We offer a 14-day return period on eligible products where applicable.

      Return requests should be made within 14 days of receiving your order. Unless the goods
      are faulty, damaged or otherwise covered by your statutory rights, the customer is
      responsible for the cost of returning the goods.

      Returned goods should be unused, in their original condition and, where reasonably possible,
      in their original packaging.

      Non-Returnable & Special-Order Items

      Certain products may not be eligible for change-of-mind returns, including:

      • bespoke products;
      • made-to-order products;
      • personalised or specially manufactured items;
      • certain special-order products;
      • products that have been installed, used, altered or modified where a return is no longer possible.

      Specific return conditions may also apply to certain flue, chimney and other specialist components.

      Please check the product information and our full Returns & Exchange Policy before ordering
      if you are unsure.

      Any damaged goods should be reported to us as soon as possible, ideally within
      48 hours of delivery, together with photographs where available.
      This allows us to investigate transport damage promptly and does not affect your statutory rights.

      Where applicable and permitted under our returns policy, a
      restocking charge of up to 30% may apply to certain returned or exchanged
      products that need to be returned to a manufacturer or supplier.


      Learn more about our Returns & Exchange Policy

      The Midtherm HTS Twin Wall 45° Angle is a premium insulated chimney component designed for medium to high-temperature applications. Precision-engineered and backed by decades of expertise, it is the ideal solution for installations using solid fuel, multi-fuel, gas, oil, or biomass. Manufactured by Midtherm Flue Systems—the only British-owned manufacturer in the industry—this product combines durability, functionality, and a sleek, modern design.

      Features

      Exceptional Build Quality

      • Inner Liner: Made from 0.5mm 316L 2B grade stainless steel with a welded seam, it is 25% thicker than most systems, ensuring superior durability.
      • Outer Casing: Constructed from 0.5mm 304 BA grade stainless steel, also with a welded seam, offering robust protection.
      • Insulation: Features 25mm of high-density mineral wool for excellent heat retention and enhanced safety.

      Temperature Resistance

      Capable of withstanding operating temperatures up to 450°C, making it suitable for demanding heating and ventilation systems.

      Innovative Design & Compatibility

      • Modern Aesthetic: Available in a bright annealed stainless steel finish or powder-coated black to suit various installations.
      • Push-Fit System: Features a socket and spigot connection for quick, secure assembly.
      • Locking Band: Equipped with an over-center stainless steel clip, ensuring a smooth, secure, and visually appealing joint.

      Versatile Dimensions

      Stocked in diameters of 130mm, 150mm, with options available from 100mm to 300mm (larger sizes available on request).

      Applications

      Suitable for a variety of domestic and commercial installations, including:

      • Solid Fuel
      • Oil and Gas
      • Biomass and Pellets
      • Ventilation and Extract Systems

      Comprehensive Warranty

      Enjoy peace of mind with a 20-year warranty for registered installations when installed and maintained correctly.

      Certifications & Assurance

      HTS Twin Wall components meet Class 1 Twin Wall standards, ensuring safety, efficiency, and compliance with modern heating requirements. Installation and use must adhere to proper sizing and design specifications to maintain warranty coverage.

      Why Choose Midtherm HTS?

      • Trusted Reliability: Manufactured by a family-run, environmentally conscious business with a nationwide distribution network.
      • Unmatched Quality: Built using advanced manufacturing and welding techniques for superior performance.
      • Adaptable Design: Compatible with a wide range of appliances and fuels for versatile applications.
      • Custom Finishes: Powder coating available in any BS or RAL color to complement your aesthetic preferences.

      Downloads:

      Specifications

      HT-S Technical Specification:

      TypeDetails
      Product Code:08
      Description:316 / 25mm Rockwool / 304
      Inner Skin:0.5mm 316 (EN 1.4404)
      Outer Skin:0.5mm 304 (EN 1.4301)
      Insulation:Mineral Wool 128kg/m3
      Insulation Thickness:25mm

      Product Certification:

      Certificate NameNumberIssued By
      CE Mark0086-CPD-566560BSI
      BS 476WARRES – 128942Faverdale
      BS EN 1856-1:200354522/1BSRIA
      BS EN 1443:200355693/1BSRIA

      Additional information

      Brand

      Midtherm

      Colour

      Stainless Steel

      Country Of Origin

      United Kingdom

      Flue Diameter

      127mm (5"), 150mm (6")

      Fuel Type

      Gas, Multi Fuel

      Material

      Stainless Steel

      Warranty

      20 Years (if registered)

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