Gather Hood Large (300x400) - Ø 180 (20-180-GHL)

Name: Gather Hood Large (300x400) - Ø 180
Brand: National Flues
SKU: 20-180-GHL
Price: 135.99 GBP
Availability: InStock
Rating: 9.6 (0 reviews)

National Flues presents the Gather Hood Large (300x400) - Ø 180, a premier chimney accessory designed for optimal flexible flue liner installations. This stainless steel gather hood enhances gas flow and ensures a secure connection between your appliance and chimney system. Ideal for wood, oil, gas, and smokeless coal setups, this product is a top choice for those seeking both performance and safety in chimney installations.

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In Stock

£135.99

with free delivery

At a Glance

Compliant with British Building Regulations Document J
Safe for high-temperature applications up to 600°C
Durable 316L stainless steel construction
Enhances and directs gas flow efficiently
Compatible with wood, oil, gas and smokeless coal appliances

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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:

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Phone: 01670 206999
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Info
Specs
Install
FAQs

The Large Gather Hood (300x400) - Ø 180 from our MI-FLEX accessories range is designed to be an essential component in the installation of MI-FLEX 316 and 904 flexible flue liners. Creating a secure and efficient connection between the flue liner and open fireplace, this gather hood ensures optimal gas flow, directing it safely up the chimney. Compliant with Building Regulations Document J, this gather hood is suitable for use with appliances reaching temperatures up to 600°C, including those burning wood with less than 20% moisture, smokeless coal, gas, and oil.

For best results, pair it with bottom fixings to create a gas-tight seal with fire cement, ceramic rope, or high-temperature sealant. Ensure your chimney system allows for easy sweeping and maintenance, with cleaning recommended twice a year for solid fuel appliances.

SKU: 20-180-GHL

Technical Specifications
SKU	20-180-GHL
Item	Gather Hood Large (300x400) - u00d8 180
Designation	BSEN 1856-2 T600 N1 W V2 L50012 G
System	MI-FLEX Accessories MF20
Material	316L Stainless Steel
Colour Finish	Natural / Stainless Steel
Compatible Fuels	Wood, Oil, Gas, Smokeless Coal
Approvals	HETAS / CE
Dimensions	300x400 mm
Fitting Diameter	u00d8 180 mm

• Correct installation is essential for safe operation. Begin by positioning the gather hood at the base of your masonry chimney. • Ensure that the chimney system has been designed to allow for easy sweeping and maintenance access. • Attach the gather hood using the provided adaptor to connect the flexible flue liner securely. • For a gas-tight seal, use bottom fixings combined with high-temperature sealants such as fire cement, ceramic rope, or tape. • It is important that the installation complies with the Building Regulations Document J, ensuring full enclosure within a masonry structure. • Always verify that your appliance operates within the recommended temperature limit of up to 600°C. • Regular cleaning, at least twice a year for solid fuel applications, is recommended to maintain efficiency and safety.

A gather hood is used to expand the area for escaping gasses when a flexible flue liner is installed above an open fireplace. This ensures efficient gas flow up the chimney liner.

The gather hood attaches to the base of the chimney. Its metal flaps are folded at right angles and screwed into the brickwork for secure installation. An adaptor attaches the flexible flue liner to the hood.

Yes, the gather hood is suitable for appliances operating at temperatures up to 600°C (T600 designation) and can be used with wood (under 20% moisture), smokeless coal, gas, and oil-fired appliances.

Chimney systems should be designed for easy sweeping and maintenance access. It’s recommended to clean chimneys serving solid fuel appliances at least twice a year, ideally at the end and start of the heating season.

No, Building Regulations Document J specifies that flexible flue liners, including those with a gather hood, must be completely enclosed within a masonry chimney. Non-masonry enclosures are not acceptable.

For a secure and gas-tight seal, you can use fire cement, ceramic rope or tape, or high-temperature sealant during the installation of the gather hood.

Yes, it’s recommended to have the chimney system swept by a competent person. Solid fuel applications should use HETAS registered sweeps, whose services can be found at www.hetas.co.uk.

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.

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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.