Alpha - White Column Radiator H500mm x W599mm 3 Column
Product code: 23991
Material
Crafted from durable steel, this radiator offers excellent heat output and longevity. Steel’s malleability allows the design to efficiently transfer heat from your central heating system to your room, keeping your home warm and comfortable. It’s also tough enough to handle everyday knocks and bumps without damage.
Columns
The “3 Column” design features three vertical tubes connected at the top and bottom. This gives the radiator more depth and heat output compared to slimmer 2 column models, making it perfect for warming larger spaces with style.
Colour
White is a classic and versatile choice that suits any décor. The gloss powder-coated finish provides a smooth, even surface that’s easy to clean and adds a fresh, bright feel to your room. White radiators allow for easy customization with a wide range of valve and accessory colours.
Heat Source
Designed for use with central heating or hot water systems, this radiator works seamlessly with combi boilers, conventional gravity-fed systems, or systems with cylinders.
Accessories
With G1/2” connections at the bottom on both sides, valve choice depends on your pipework: corner valves for wall-side pipework, angled valves for floor-up pipework, or straight valves for horizontal pipes. Wall mounting brackets are included; feet are optional but recommended for a traditional look and extra support. Alternatively, wall stays can be used instead of brackets for a decorative finish.
Choose from manual valves for straightforward on/off control or thermostatic valves (TRVs) for energy-saving temperature regulation—just avoid installing TRVs in the same room as your main boiler thermostat to prevent conflicts.
Need help calculating the heat output for your room?
Guarantee Length: 20 Years
Collection: Alpha
Supplied with: Wall Brackets,Masonry Fixings,Bleed Valve & Blanking Plug Included
Colour: White
Finish: Gloss
Heat Source: Central Heated/Hot Water
Material: Steel
Orientation: Horizontal
Style: 3 Column
Radiator Valves Included: No
Product Assurances: UKCA Marked, BS EN 442 Certified, 20 Years Guarantee
SKU ALP-3-50599
Connection Size/Type: 1/2" BSP
GTIN:5056675402071
Dry Mass (kg):19.5kg
Height: 500mm
Width:599mm
Pipe Centres: 598.5mm + Valves
Projection: 120.5mm
Wall to Pipe Centres: 70.5mm
BTUs (T30): 1119.00
BTUs (T50): 2153.00
Watts (T30):328.00
Watts (T50): 631.00
Water Content (l): 9.8
Number of Sections: 13
Number of Columns: 3 Column
Maximum Operating Pressure (kPa): 600.00
Depth: 100mm
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.
Alpha - White Column Radiator H500mm x W599mm 3 Column
Product code: 23991
Alpha - White Column Radiator H500mm x W599mm 3 Column
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
Crafted from durable steel, this radiator offers excellent heat output and longevity. Steel’s malleability allows the design to efficiently transfer heat from your central heating system to your room, keeping your home warm and comfortable. It’s also tough enough to handle everyday knocks and bumps without damage.
Columns
The “3 Column” design features three vertical tubes connected at the top and bottom. This gives the radiator more depth and heat output compared to slimmer 2 column models, making it perfect for warming larger spaces with style.
Colour
White is a classic and versatile choice that suits any décor. The gloss powder-coated finish provides a smooth, even surface that’s easy to clean and adds a fresh, bright feel to your room. White radiators allow for easy customization with a wide range of valve and accessory colours.
Heat Source
Designed for use with central heating or hot water systems, this radiator works seamlessly with combi boilers, conventional gravity-fed systems, or systems with cylinders.
Accessories
With G1/2” connections at the bottom on both sides, valve choice depends on your pipework: corner valves for wall-side pipework, angled valves for floor-up pipework, or straight valves for horizontal pipes. Wall mounting brackets are included; feet are optional but recommended for a traditional look and extra support. Alternatively, wall stays can be used instead of brackets for a decorative finish.
Choose from manual valves for straightforward on/off control or thermostatic valves (TRVs) for energy-saving temperature regulation—just avoid installing TRVs in the same room as your main boiler thermostat to prevent conflicts.
Need help calculating the heat output for your room?
Guarantee Length: 20 Years
Collection: Alpha
Supplied with: Wall Brackets,Masonry Fixings,Bleed Valve & Blanking Plug Included
Colour: White
Finish: Gloss
Heat Source: Central Heated/Hot Water
Material: Steel
Orientation: Horizontal
Style: 3 Column
Radiator Valves Included: No
Product Assurances: UKCA Marked, BS EN 442 Certified, 20 Years Guarantee
SKU ALP-3-50599
Connection Size/Type: 1/2" BSP
GTIN:5056675402071
Dry Mass (kg):19.5kg
Height: 500mm
Width:599mm
Pipe Centres: 598.5mm + Valves
Projection: 120.5mm
Wall to Pipe Centres: 70.5mm
BTUs (T30): 1119.00
BTUs (T50): 2153.00
Watts (T30):328.00
Watts (T50): 631.00
Water Content (l): 9.8
Number of Sections: 13
Number of Columns: 3 Column
Maximum Operating Pressure (kPa): 600.00
Depth: 100mm
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.
