Morco Boilers RSF345 Vertical Flue, Boiler Flue Kit, Vertical Roof Flue, Balanced Flue Terminal, Replacement Flue Component, Heating Venting Accessory, Part Number: RSF345

Morco Boilers RSF345 Vertical Flue, Boiler Flue Kit, Vertical Roof Flue, Balanced Flue Terminal, Replacement Flue Component, Heating Venting Accessory

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£91.79
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Morco Boilers RSF345 Vertical Flue, Boiler Flue Kit, Vertical Roof Flue, Balanced Flue Terminal, Replacement Flue Component, Heating Venting Accessory, Part Number: RSF345
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Morco Boilers RSF345 Vertical Flue, Boiler Flue Kit, Vertical Roof Flue, Balanced Flue Terminal, Replacement Flue Component, Heating Venting Accessory

SKU W-449369
Manufacturer part number
RSF345
£91.79
inc VAT£76.49 ex VAT
Lead time: 1-5 working days

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Product: Morco Boilers RSF345 Vertical Flue, Boiler Flue Kit, Vertical Roof Flue, Balanced Flue Terminal, Replacement Flue Component, Heating Venting Accessory (Part no. W-449369)

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Description

Product Overview

The Morco Boilers RSF345 Vertical Flue is a genuine flue component designed to route boiler combustion gases safely up and out through a roof installation. Suitable for compatible Morco boiler setups, it provides a neat vertical flue option where rear or horizontal discharge is not practical. Ideal for replacement or new installations requiring a vertical flue run.

Key Features

  • Vertical flue configuration – enables safe roof exit for combustion gases where a horizontal flue is not suitable.
  • Designed for compatible Morco boiler systems – helps ensure correct fit and dependable operation.
  • Ideal replacement component – restores a worn or damaged flue arrangement to maintain safe venting performance.
  • Neat, practical installation option – supports cleaner routing in tight spaces and awkward layouts.

Use Case / Application

Designed for heating and plumbing installations where a boiler flue needs to terminate vertically through the roof. Commonly used in domestic settings and compact plant areas, such as:

  • Utility rooms where external wall access is limited
  • Lofts and roof-space routes for vertical flue runs
  • Properties where boiler positioning makes a horizontal flue impractical
  • Replacement work during servicing or repairs to maintain safe venting

Problem → Solution

Ideal for installations that cannot use a standard horizontal flue, providing a suitable vertical roof flue solution for compatible Morco boiler systems.

Product Specifications

• Manufacturer – Morco Boilers
• Manufacturer Part Number (MPN) – RSF345
• Product Type – Vertical Flue
• Typical Applications / Use Cases – Vertical boiler flue routing through roof installations; replacement flue component for compatible Morco boiler systems

Why Buy from BHL

Morco Boilers is known for reliable heating solutions and matching components designed for correct system compatibility. Buy the Morco Boilers RSF345 Vertical Flue online from BHL for competitive pricing and free* and fast UK delivery. BHL is a specialist online merchant, trusted by thousands of satisfied customers online since 1998 with thousands of 5 star reviews. Order today for genuine parts delivered with care from UK warehouses. *see our terms

Reviews

Buying guide: Domestic Boiler Accessories

Domestic boiler accessories are the parts that complete a boiler installation: flue kits, extensions, bends and terminals, plume management kits, programmers, room thermostats and wireless controls, weather compensators, filters, pressure relief valve kits and natural gas to LPG conversion kits. Boiler and flue packs are also included.

Flues

Flue systems are designed for particular boiler ranges, so use only the flue parts the boiler manufacturer lists for your model. Concentric flues run the air intake around the exhaust pipe and are commonly 60/100mm or 80/125mm in diameter; twin pipe systems use separate air and exhaust pipes. The installation manual sets the maximum flue length for each boiler, and every bend or elbow reduces the length allowed. Plume management kits redirect the visible plume from a condensing boiler away from where it could cause a nuisance.

Controls

Programmers set the times for heating and hot water, and room thermostats, wired or wireless, switch the heating according to the room temperature. A weather compensator adjusts the boiler's output using an outdoor temperature sensor. In England, gas and oil boilers need time and temperature controls, and when a combi boiler is installed one extra energy saving measure is also expected: flue gas heat recovery, weather compensation, load compensation or a smart control with automation and optimisation. Check that any control is compatible with the boiler, as some are made for one manufacturer only.

Safety

Work on gas pipework, appliances and their gas parts must only be carried out by a Gas Safe registered engineer. Oil boilers should be worked on by an OFTEC registered technician.

For replacement parts, see boiler spares; for thermostats and programmers, see heating controls.

Shop all Domestic Boiler Accessories

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