Zennor - Anthracite Dual Fuel Towel Rail H1400mm x W400mm Thermostatic
Product code: 20404
Material
Made from high-quality steel, this towel rail offers both excellent value and dependable durability. Steel is the go-to choice for bathrooms, designed to resist knocks, bumps, and the rigours of everyday use.
Style
This is a curved ladder towel rail, where horizontal bars arch outward between two vertical collectors. That outward curve makes it easier to feed towels through and increases storage space—an especially handy touch for busy bathrooms.
Colour
Anthracite brings contemporary elegance into your bathroom. Inspired by the rich, smoky tones of natural coal, its matt finish delivers a bold, modern look that complements both minimalist and industrial interiors. It’s a stylish choice for those wanting more than just function from their fixtures—perfectly blending visual impact with everyday practicality.
Heat Source
This towel rail features dual fuel capability—working with your central heating system in winter and switching to electric-only mode during the warmer months. Enjoy warm towels all year round without needing to turn on your full heating system.
Accessories
Supplied with all necessary components for wall mounting: brackets, masonry fixings, chrome bleed valve, and blanking plug. Also included are all dual fuel accessories: a thermostatic electric heating element, 2 x T-pieces, and a pair of angled manual valves.
The T-piece allows the electric element and valve to be installed simultaneously. The second T-piece is optional, ideal for symmetrical valve setups. The element can be installed on either side depending on your preference or plumbing setup.
The Element – Talus Thermostatic Digital Element
This element provides precise temperature control and added functionality via a simple digital interface:
-
Temperature Control: Choose from 45°C to 65°C in 5°C steps, with LED lights indicating your selected temperature.
-
Standby Mode: Indicated by a blue light on the power button.
-
Heating Mode: Press the power button (red light shows), then use the ‘T’ button to select your preferred heat level.
-
Boost Modes:
-
Boost 2hr: Red light on the clock button—heats for 2 hours, then returns to standby.
-
B1 Program: Blue clock light—boosts for 2 hours every 24 hours.
-
B2 Program: Red clock light—2 hours on, followed by 10 hours standby, repeating.
-
-
Frost Protection: Activates automatically if liquid temperature drops below 7°C.
-
Error Mode: Engages if the liquid temperature drops below -10°C or exceeds 85°C (shown by slow flashing red lights).
Full installation instructions and a user guide are provided with the element.
Please note: This electric element must be installed by a registered competent electrician. Incorrect installation will void the product warranty. Fuse size is based on a nominal 230V UK supply, but your electrician will determine the exact requirement based on your home's voltage.
Need help calculating the heat output for your room?
Guarantee Length: 15 Years (Towel Rail), 2 Year (Element)
Collection: Zennor
Supplied with: Dual Fuel Element, Wall Brackets,Masonry Fixings,Bleed Valve & Blanking Plug Included
Colour: Anthracite
Finish: Matt
Heat Source: Dual Fuel
Ral Code: 7016
Material: Steel
Style: Curved Ladder
Radiator Valves Included: TRUE
Product Assurances: UKCA Marked, BS EN 442 Certified, 15 Years (Towel Rail), 2 Year (Element) Guarantee
SKU ZEN-14400CA-THDF
Connection Size/Type: 1/2" BSP
GTIN:5056675425933
Tube Diameter: 22mm
Dry Mass (kg):8kg
Height: 1400mm
Width:400mm
Number of Tubes: 22
Pipe Centres: 250mm - 450mm
Projection: 111.5mm - 121.5mm
Wall to Pipe Centres: 81.5mm - 91.5mm
BTUs (T30): 798.0
BTUs (T50): 1488.0
Watts (T30):234.0
Watts (T50): 436.0
Water Content (l): 4.8
Element Output: 400w
Maximum Operating Pressure (kPa): 800.0
Maximum Operating Temperature (C): 45°C - 65°C; 7°C Antifreeze Protection
Depth: 45mm
Assembly Required: Unfilled - Some minor assembly required
IP Rating: IPX4
Power Supply: 220V-240V Fused Spur, 5 Amp Fuse*
Operating Modes: Standby w/Antifreeze, Heating, Boost/Program, Error
Control Type: Built-In Programmable Thermostat
Download: Declaration of Performance
Download: Installation Instructions
- Free delivery options (UK Mainland, Northern Ireland/Highlands/Islands)
- Next working day delivery options (selected products & locations)
- We deliver between 8am and 6pm
- Contact us to delay delivery/request a specific day
- Limitless (that's right, no time limit!) returns
- Free of charge: either we will collect/send a returns label, or we'll refund your postage costs.
- Returns (for reasons other than damage or faults) can only be accepted if the item is returned in the original packaging and has not been fitted or used in any way.
- Whilst all our products pass strict quality standards, on very rare occasions, you may find an item arrives damaged. We ask that when you receive your order, you inspect the packaging before signing and note any damage when signing for it or refuse the delivery, with damage as the reason. Please contact us if you have any issues.
- If you find damage after you have signed for your delivery, please contact us with images of the damage as soon as possible.
- Once the damage has been reported, we'll either replace the item completely free of charge or refund you in full.
-
How can I contact you?
You can message us on live chat. We aim to reply in one minute, between 9am - 5:30pm. After 5:30pm, we'll create a ticket and get back to you asap.
-
Where do you deliver?
We deliver to the whole of the UK and Northern Ireland - including the highlands and islands.
We are currently unable to offer international delivery. However, you can place an order for collection and arrange to have a courier of your choice collect the order and delivery it to you.
-
Who will deliver my order?
Our two primary couriers for UK Radiators products are Royal Mail and DX Express. Your courier will depend on the size and weight of the items on your order.
For example a pair of valves will be sent to you with Royal Mail, whereas a Column radiator will be sent with DX.
Tracking is provided for all orders dispatched from our warehouse.
If you order a Terma product, your item(s) will be coming directly from their warehouse.
The couriers they use are Stop Start and Parcelforce, and tracking is provided where possible.
-
Can I choose a specific time or day for my delivery?
If, for any reason, you would like to delay your delivery, please contact one of the customer service team as soon as you have placed your order, who will be able to assist you.
We are currently unable to request specific delivery time slots with our couriers.
Some of our couriers will advise you of a smaller time slot for your delivery, but unless otherwise stated, deliveries can take place any time between 7am and 7pm.
-
Can I upgrade my delivery?
We offer the option to upgrade delivery to either Two Man VIP delivery to a room of your choice, or Next Working Day delivery. Upgrade availability is dependant on the size of product and delivery location. Once dispatched, your order is sent on the delivery service chosen at checkout. This cannot be changed after dispatch.
-
Can I send orders to a different address?
You can change the shipping address to a different address if your billing address matches what's registered against your payment method.
However, this can only be done when placing the order.
We are unable to change the delivery address after the order has been placed and dispatched. In this instance, the order would need to be cancelled and refunded, and a new order placed with the correct delivery address.
Zennor - Anthracite Dual Fuel Towel Rail H1400mm x W400mm Thermostatic
Product code: 20404
Zennor - Anthracite Dual Fuel Towel Rail H1400mm x W400mm Thermostatic
The Alpha White Column Radiator (H500mm × W768mm) offers the perfect mix of classic elegance and dependable performance.
All transactions Secured and Guaranteed
Your chosen heating system:
Watts & BTUs (British Thermal Units) Explained
What is a Watt?
Watts are our main unit of energy/power in the UK, commonly associated with lightbulbs and Home Energy performance certificates (EPCs).
What is a BTU?
BTUs are the unit of measurement used to portray a radiators heat output and a rooms heating requirement. 1 Watt is equal to 3.41 BTUs.
Why are they important?
We buy radiators to heat our homes, right? So, we need a way of knowing if a radiator is powerful enough to heat the room that we are shopping for - Watts and BTUs provide us with a value that makes its easier to compare radiators and ultimately choose the right one for our heating requirement.
Need help figuring out how much heat your room needs?
Our fast and easy-to-use BTU calculator can help you:
- Work out a heating requirement value (in BTUs & Watts) for your room
- Show you in-stock radiator recommendations that can fulfil this heat requirement
Delta (Δ) Ratings Explained
What is a Delta (Δ) Rating?
When discussing heat outputs, the Delta rating is the difference between the temperature of the water inside the heating system and the desired temperature of the room.
What does the value represent?
In simple terms, this value is about heat loss. Heating a room only works, if the radiator output exceeds the heat loss of the room.
We use this calculation to make it easy to choose a radiator that will have a heat output that exceeds the heat loss of the room when connected to your heating system type.
If you don't know the room heat loss, you can use our calculator to find out.
What Delta Rating should I use?
- Δ50 = Gas or oil boiler with a flow temperature of around 75°C and a return temperature of around 65°C.
- Δ30 = Low temperature systems e.g heat pumps.
Material
Made from high-quality steel, this towel rail offers both excellent value and dependable durability. Steel is the go-to choice for bathrooms, designed to resist knocks, bumps, and the rigours of everyday use.
Style
This is a curved ladder towel rail, where horizontal bars arch outward between two vertical collectors. That outward curve makes it easier to feed towels through and increases storage space—an especially handy touch for busy bathrooms.
Colour
Anthracite brings contemporary elegance into your bathroom. Inspired by the rich, smoky tones of natural coal, its matt finish delivers a bold, modern look that complements both minimalist and industrial interiors. It’s a stylish choice for those wanting more than just function from their fixtures—perfectly blending visual impact with everyday practicality.
Heat Source
This towel rail features dual fuel capability—working with your central heating system in winter and switching to electric-only mode during the warmer months. Enjoy warm towels all year round without needing to turn on your full heating system.
Accessories
Supplied with all necessary components for wall mounting: brackets, masonry fixings, chrome bleed valve, and blanking plug. Also included are all dual fuel accessories: a thermostatic electric heating element, 2 x T-pieces, and a pair of angled manual valves.
The T-piece allows the electric element and valve to be installed simultaneously. The second T-piece is optional, ideal for symmetrical valve setups. The element can be installed on either side depending on your preference or plumbing setup.
The Element – Talus Thermostatic Digital Element
This element provides precise temperature control and added functionality via a simple digital interface:
-
Temperature Control: Choose from 45°C to 65°C in 5°C steps, with LED lights indicating your selected temperature.
-
Standby Mode: Indicated by a blue light on the power button.
-
Heating Mode: Press the power button (red light shows), then use the ‘T’ button to select your preferred heat level.
-
Boost Modes:
-
Boost 2hr: Red light on the clock button—heats for 2 hours, then returns to standby.
-
B1 Program: Blue clock light—boosts for 2 hours every 24 hours.
-
B2 Program: Red clock light—2 hours on, followed by 10 hours standby, repeating.
-
-
Frost Protection: Activates automatically if liquid temperature drops below 7°C.
-
Error Mode: Engages if the liquid temperature drops below -10°C or exceeds 85°C (shown by slow flashing red lights).
Full installation instructions and a user guide are provided with the element.
Please note: This electric element must be installed by a registered competent electrician. Incorrect installation will void the product warranty. Fuse size is based on a nominal 230V UK supply, but your electrician will determine the exact requirement based on your home's voltage.
Need help calculating the heat output for your room?
Guarantee Length: 15 Years (Towel Rail), 2 Year (Element)
Collection: Zennor
Supplied with: Dual Fuel Element, Wall Brackets,Masonry Fixings,Bleed Valve & Blanking Plug Included
Colour: Anthracite
Finish: Matt
Heat Source: Dual Fuel
Ral Code: 7016
Material: Steel
Style: Curved Ladder
Radiator Valves Included: TRUE
Product Assurances: UKCA Marked, BS EN 442 Certified, 15 Years (Towel Rail), 2 Year (Element) Guarantee
SKU ZEN-14400CA-THDF
Connection Size/Type: 1/2" BSP
GTIN:5056675425933
Tube Diameter: 22mm
Dry Mass (kg):8kg
Height: 1400mm
Width:400mm
Number of Tubes: 22
Pipe Centres: 250mm - 450mm
Projection: 111.5mm - 121.5mm
Wall to Pipe Centres: 81.5mm - 91.5mm
BTUs (T30): 798.0
BTUs (T50): 1488.0
Watts (T30):234.0
Watts (T50): 436.0
Water Content (l): 4.8
Element Output: 400w
Maximum Operating Pressure (kPa): 800.0
Maximum Operating Temperature (C): 45°C - 65°C; 7°C Antifreeze Protection
Depth: 45mm
Assembly Required: Unfilled - Some minor assembly required
IP Rating: IPX4
Power Supply: 220V-240V Fused Spur, 5 Amp Fuse*
Operating Modes: Standby w/Antifreeze, Heating, Boost/Program, Error
Control Type: Built-In Programmable Thermostat
Download: Declaration of Performance
Download: Installation Instructions
- Free delivery options (UK Mainland, Northern Ireland/Highlands/Islands)
- Next working day delivery options (selected products & locations)
- We deliver between 8am and 6pm
- Contact us to delay delivery/request a specific day
- Limitless (that's right, no time limit!) returns
- Free of charge: either we will collect/send a returns label, or we'll refund your postage costs.
- Returns (for reasons other than damage or faults) can only be accepted if the item is returned in the original packaging and has not been fitted or used in any way.
- Whilst all our products pass strict quality standards, on very rare occasions, you may find an item arrives damaged. We ask that when you receive your order, you inspect the packaging before signing and note any damage when signing for it or refuse the delivery, with damage as the reason. Please contact us if you have any issues.
- If you find damage after you have signed for your delivery, please contact us with images of the damage as soon as possible.
- Once the damage has been reported, we'll either replace the item completely free of charge or refund you in full.
-
How can I contact you?
You can message us on live chat. We aim to reply in one minute, between 9am - 5:30pm. After 5:30pm, we'll create a ticket and get back to you asap.
-
Where do you deliver?
We deliver to the whole of the UK and Northern Ireland - including the highlands and islands.
We are currently unable to offer international delivery. However, you can place an order for collection and arrange to have a courier of your choice collect the order and delivery it to you.
-
Who will deliver my order?
Our two primary couriers for UK Radiators products are Royal Mail and DX Express. Your courier will depend on the size and weight of the items on your order.
For example a pair of valves will be sent to you with Royal Mail, whereas a Column radiator will be sent with DX.
Tracking is provided for all orders dispatched from our warehouse.
If you order a Terma product, your item(s) will be coming directly from their warehouse.
The couriers they use are Stop Start and Parcelforce, and tracking is provided where possible.
-
Can I choose a specific time or day for my delivery?
If, for any reason, you would like to delay your delivery, please contact one of the customer service team as soon as you have placed your order, who will be able to assist you.
We are currently unable to request specific delivery time slots with our couriers.
Some of our couriers will advise you of a smaller time slot for your delivery, but unless otherwise stated, deliveries can take place any time between 7am and 7pm.
-
Can I upgrade my delivery?
We offer the option to upgrade delivery to either Two Man VIP delivery to a room of your choice, or Next Working Day delivery. Upgrade availability is dependant on the size of product and delivery location. Once dispatched, your order is sent on the delivery service chosen at checkout. This cannot be changed after dispatch.
-
Can I send orders to a different address?
You can change the shipping address to a different address if your billing address matches what's registered against your payment method.
However, this can only be done when placing the order.
We are unable to change the delivery address after the order has been placed and dispatched. In this instance, the order would need to be cancelled and refunded, and a new order placed with the correct delivery address.
