The Type 21 radiator is a compact double panel heating solution designed to provide higher heat output than single panel models while maintaining a relatively slim installation depth. Manufactured to EN442 standards, Type 21 radiators are widely used in residential and light commercial heating systems across global markets.
Heatary supplies Type 21 double panel radiators for international projects on a bulk and container-load basis, with direct shipment from certified manufacturing facilities.
What is a Type 21 Radiator?
A Type 21 radiator consists of:
- 2 steel panels
- 1 convector fin layer
This configuration delivers improved heat output compared to Type 11 radiators, while remaining slimmer than Type 22 models. Type 21 radiators are commonly selected where balanced performance and reduced depth are required.
They are frequently specified in:
- Residential buildings
- Apartments and housing developments
- Renovation and retrofit projects
Type 21 Radiator – Technical Specifications
Typical technical characteristics include:
- Material: Cold-rolled steel
- Panel configuration: Double panel / single convector
- Operating pressure: Up to 10 bar
- Test pressure: Up to 13 bar
- Maximum operating temperature: 110°C
- Finish: RAL 9016 white (other colours available on request)
All heat output values are tested and certified in accordance with EN442.
Type 21 Radiator Sizes & Configurations
Heatary Type 21 radiators are available in a wide range of standard sizes to meet international heating requirements.
Standard heights:
- 300 mm
- 400 mm
- 500 mm
- 600 mm
- 700 mm
Standard lengths:
-
400 mm to 2000 mm
Design options:
- Classic (square edge)
- Softline (rounded edge)
Mixed size configurations can be supplied within a single container.
Type 21 Radiator Applications
The Type 21 radiator is suitable for:
- Residential central heating systems
- Apartment blocks
- Hotels and hospitality projects
- Light commercial buildings
It is compatible with:
- Gas and oil boilers
- Central and district heating systems
Type 21 Radiator Standards & Certifications
All Type 21 radiators supplied by Heatary comply with international standards:
- EN442 – Heat output and performance
- CE marking – European compliance
- UKCA marking – United Kingdom compliance
Supporting documentation available upon request:
- Technical datasheets
- Heat output tables (Watt / BTU)
- Installation manuals
- Warranty documentation
All products are tested in accordance with EN 442 European radiator standards, which define performance and safety requirements for panel radiators used in central heating systems worldwide.
Type 21 Radiator Supply & Ordering
Heatary operates as a UK-based global heating products supplier.
- Bulk and container-load orders
- Direct factory shipment from Türkiye
- Mixed product loading available
- OEM / private label options
- Global delivery support
Contact Heatary for technical specifications, pricing, and lead times.
All Type 21 radiators supplied by Heatary are manufactured and tested in accordance with EN 442 European radiator standards, which define the heat output measurement methods, performance criteria, and safety requirements for steel panel radiators used in central heating systems across international markets.
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