Mi Flues TW Pro MB - 250mm Adjustable Connecting Pipe

The TWPro MB 250mm Adjustable Connecting Pipe is a premium twin wall insulated chimney component designed to provide additional flexibility when connecting and positioning a chimney system. Featuring an integrated telescopic section, it allows adjustment during installation, helping achieve an accurate and professional connection where fixed-length components may not provide the required fit.

Manufactured with a 316 grade stainless steel inner skin, 304 grade stainless steel outer skin and high-density rockwool insulation, the pipe combines excellent durability with dependable thermal performance. Its high-temperature matt black finish provides a smart appearance that complements contemporary wood burning stove and heating appliance installations.

Suitable for wood burning stoves, solid fuel appliances, gas coal-effect fires, oil boilers and gas boilers, the TWPro system is HETAS Approved and CE marked.

Features & Benefits

Adjustable Telescopic Design

The integrated telescopic section provides additional flexibility during installation, helping accommodate variations in the required chimney connection length and allowing a neater final installation.

Premium Stainless Steel Construction

Manufactured with a 0.4mm thick 316 grade stainless steel inner skin and 0.4mm thick 304 stainless steel outer skin, providing excellent strength, durability and corrosion resistance.

High-Temperature Matt Black Finish

The outer stainless steel casing features a durable high-temperature black coating, creating a sleek appearance particularly suited to exposed chimney sections and modern stove installations.

High-Density Rockwool Insulation

Compressed rockwool insulation with a density of 200kg/m³ helps retain flue gas temperatures and provides excellent thermal insulation within the twin wall construction.

Fully Welded Construction

All parts are fully welded for strength and dependable long-term performance in demanding chimney and flue applications.

Multi-Fuel Compatibility

Suitable for appliances using wood, oil, gas and low sulphur coal, making the TWPro system a versatile option for numerous domestic heating installations.

HETAS Approved & CE Marked

The TWPro chimney system is HETAS Approved and CE marked, providing confidence in its suitability for compliant chimney installations when correctly specified and fitted.

Product Overview

The TWPro MB 250mm Adjustable Connecting Pipe is designed for installations where additional flexibility is required between fixed chimney components. Its telescopic construction allows the effective connection length to be adjusted during fitting, helping installers achieve accurate alignment without relying solely on standard fixed pipe lengths.

The component features a 316 grade stainless steel inner liner surrounded by compressed rockwool insulation with a density of 200kg/m³. A 304 stainless steel outer casing provides additional protection and is finished with a high-temperature matt black coating for a smart, professional appearance.

This robust construction makes the component suitable for use with a wide variety of heating appliances, including wood burning stoves, gas coal-effect fires, oil boilers, gas boilers and solid fuel appliances.

Technical Specifications

Installation Information

• TWPro twin wall insulated chimney components are connected using a locking band, which is supplied for securing the joint.
• The adjustable telescopic section allows the installer to fine-tune the connection length during installation, making it particularly useful where standard fixed lengths do not provide the exact positioning required.
• A minimum 50mm distance to combustible materials must be maintained from the outside of the flue where applicable.
• Installation should always be carried out in accordance with the manufacturer's instructions, relevant Building Regulations and applicable installation standards.

Key Features

• CE marked
• HETAS Approved
• Locking band connection
• Fully welded construction
• 200kg/m³ insulation density
• 304 stainless steel outer skin
• Compressed rockwool insulation
• 50mm distance to combustibles
• 50mm adjustable connecting pipe
• Suitable for solid fuel appliances
• Suitable for wood burning stoves
• Suitable for gas and oil appliances
• High-temperature matt black finish
• 316 grade stainless steel inner skin
• 0.4mm inner and outer wall thickness
• Durable twin wall insulated construction
• Integrated telescopic section for installation flexibility

The TWPro MB 250mm Adjustable Connecting Pipe provides a practical solution when additional flexibility is required within a twin wall chimney installation, combining an adjustable telescopic design with premium stainless steel construction, high-density insulation and a smart matt black finish.

Delivery

Gosforth Fire Station offer free delivery on all order overs £100.00 to mainland UK. Unfortunately at this time we are unable to offer free delivery to the following locations. Northern Ireland (not stoves), The Channel Islands, The Isle of Man, The Isle of Wight, and all other Offshore Islands. If you are ordering from one of these locations please proceed with the order and once received a member of the team will be in touch to advise the delivery cost should you wish to go ahead.

Part of the reason why we can keep our prices so low is that we don’t hold huge amounts of stock. Due to this, most orders are ordered in from our suppliers on request. We therefore aim to dispatch orders from our showroom 5-10 days after the order is placed. We are working hard to bring this lead time down

Once the order is placed you will receive an order confirmation with an estimated delivery date.>

Once we are in the position to offer a firm delivery date a member of the team will be in touch to book a convenient delivery day with you.

Large Item delivery Information

Large items such as stoves, fires and outdoor lifestyle products will be delivered by a national pallet delivery service.

These items usually arrive on a large 7.5 tonne truck with a tail lift. If you think access for the delivery vehicle may be an issue please let us know at the time of ordering and we will work with you to find a solution.

The driver is contracted to deliver the item by pallet truck and will therefore be unable to move the item across uneven ground, grass, gravel and narrow openings.

Due to the weight and insurances drivers will not be able to assist with carrying any of the items into your property. It is the responsibility of the customer to prepare a suitable area for the goods to be left before they are taken inside. All goods must be checked while the driver is on site. They are obliged to wait with you for up to 15 minutes while you carry out these checks.

If the driver refuses to wait please mark the goods as “damaged”. On the rare occasion that the goods are damaged please mark the delivery note as “damaged” and refuse the delivery. Please take photos of the damage and contact a member of the team as soon as possible to report the damage. Damages must be reported within 24 hours of the delivery taking place.

Failed Deliveries

If for any reason you are not in when the delivery arrives on the pre-arranged delivery day a re-delivery charge will be payable.

Unfortunately if an order is cancelled after it has been dispatched, even If it has not yet reached you, the cost of the return delivery to us will be taken from the refund amount.

Smaller item delivery/strong>

Smaller items such as barbecue / fireside accessories will usually be delivered by DPD. They will contact you directly by email and text message to advise of the delivery day and time.

For larger items on the national pallet service deliveries take place Monday-Friday 9am-5pm.

Smaller items delivered by courier can be delivered Monday - Sunday.

Collections

Collections are Tuesday – Saturday 10am-4pm from our Gosforth Showroom and must be pre-arranged.

Returns

Our returns policy is simple and aims to make things as smooth as possible should you wish to return an item. You have the right to cancel any order from the time of placing the order up to 14 days after delivery. Cancellations must be submitted in writing either by post or email to online@gosforthfirestation.co.uk, quoting your order number which appears on the invoice/receipt.

Under the Consumer Contracts Regulations 2014, you have the right to receive a refund within 14 working days of cancellation. We normally pay refunds within 7 working days of cancellation or when goods have been returned safely (whichever is the latter). You are advised to retain the packaging. You will find it difficult to return the item without appropriate packaging.

The goods must not have been fitted, installed or used in any way and must be unmarked and free from blemishes of any kind.  You must return them in a saleable condition. All spare parts and painted appliances are non-returnable and non-refundable due to being a bespoke order. The cost of returning the item to us is your responsibility.

Gosforth Fire Station reserves the right to charge a restocking fee for all goods brought into stock and subsequently cancelled by the customer. This charge will be based on our cost to return the items to the supplier.

Gosforth Fire Station reserve the right to cancel an order if a product is unavailable or any pricing errors occur.

PayPal Pay in 3

What is PayPal Pay in 3?

PayPal Pay in 3 is an interest-free loan that lets you split your basket into 3 payments, with the first due at time of purchase and subsequent payments due every month on the same date. It’s a great way to spread the cost of larger items or to cover emergencies, and is a helpful tool to manage your budget more effectively. Please note that Pay in 3 is a form of credit, so carefully consider whether you can afford the repayments and be aware of the possible impact of missing payments, including making other borrowing more difficult or more expensive.

We’re offering PayPal Pay in 3 to a growing number of our UK customers.

PayPal Pay in 3 is not available for certain merchants and goods. We may also decide not to offer PayPal Pay in 3 as a payment option in certain circumstances, such as where our checks suggest an increased risk of fraud or where data we hold suggests you may not be eligible. The checks we run are with an external credit reference agency. This search will only be visible to you and will not affect your credit score.

Will I be able to use PayPal Pay in 3?

If you choose PayPal Pay in 3 as your payment method when you check out with PayPal, you’ll be taken through the application process. You’ll get a decision instantly, but not everyone is approved based on the checks we carry out.

How long will my PayPal Pay in 3 plan last?

Your plan will last 2 months in total. The first payment will be due at the time of purchase, followed by 2 further payments due each month after that.

What information do I need to apply for PayPal Pay in 3?

To apply for PayPal Pay in 3, you’ll need to provide your:

• Title
• Phone number
• Address
• Date of birth
• Payment details

How is my application for PayPal Pay in 3 assessed?

Our decision making process is automated. We assess your financial position using a combination of the information you provided within your application, and information about your usage and history with PayPal to decide whether PayPal Pay in 3 is suitable for you at this time. We may also run a “soft” credit check with an external credit reference agency when you apply if we need more information to make our decision. This search will only be visible to you and will not affect your credit score.

Are there any fees associated with PayPal Pay in 3?

There are no fees for choosing to pay with PayPal Pay in 3.

Can I opt out from seeing PayPal in 3 at checkout?

We know some customers may prefer not to see the Pay in 3 funding option within the PayPal checkout. If this includes you, you can contact us and ask us to change your account settings so that Pay in 3 is not shown. If you wanted to change this at a later date, you can contact us and we can change your settings to show Pay in 3 again.

We know that customers may choose to take this action for a variety of reasons. However, if you need further financial help and support, please check the FAQ below titled “Where else can I go for financial help and support?