

Benefits
Horizontal decorative radiator with a timeless design
The age of radiators being hidden came to a definite end with the arrival of the Planar Slim ECO. You’ll actually want to highlight this radiator. The bi-colour design with a completely smooth front and flush black upper grille and side panels gives the radiator an unrivalled look. Its high-quality finish offers you an attractive and warm radiator for years on end. Use it in combination with the Vertex Slim to create a light and spacious feel throughout your home.
Why opt for a Stelrad Planar Slim ECO radiator?
- Horizontal radiator
- Decorative, unique design
- Thin, smooth front with recessed panels
- Available in colour
3D Animation
Discover the Stelrad Planar Slim ECO here in 3D
Click and hold the left mouse button, then drag to rotate the radiator. Scroll to zoom in or out.
How does the ECO technology work?
Image gallery
Choose your colour
Choose your colour
Warmth is essential for creating a cosy home. As is an interior that you feel good in. With Stelrad you can now opt for colourful warmth.
The above colour palette can be further expanded with a multitude of RAL colours. The colours depicted are indicative only.
Accessories
Accessories
Stelrad Eclipse thermostatic insert

Permanent air vent ECO – S-Vent DUO™

Mounting key for permanent air vent

Valve opener with venting hose for T2150

Towel bar – Slim ECO

Towel bar – Chrome (also order T1165)

Chrome magnetic towel rail 
Renovation kit ECO

Stelrad thermostatic head

Double connection fitting – Straight, without drain-off facility

Double connection fitting – Straight, with drain-off facility

Double connection fitting – Angled, without drain-off facility

Double connection fitting – Angled, with drain-off facility

Drain nipple

Technical details
Technical details
The age of radiators being hidden came to a definite end with the arrival of the Planar Slim ECO.
You’ll actually want to highlight this radiator. The bi-colour design with a completely smooth front and recessed black upper grille and side panels gives the radiator an unrivalled look.
Its high-quality finish offers you an attractive and warm radiator for years on end. Use it in combination with the Vertex Slim to create a light and spacious feel throughout your home.
Height | Type 21 | Type 22 | |
---|---|---|---|
(mm) | |||
545 | W | 1.024 | 1.304 |
kg | 29,31 | 32,73 | |
l | 5,8 | 5,83 | |
m² | 4,31 | 6,33 | |
n | 1,2966 | 1,2908 | |
645 | W | 1.184 | 1.498 |
kg | 34,8 | 38,8 | |
l | 6,80 | 6,90 | |
m² | 5,24 | 7,74 | |
n | 1,3069 | 1,2999 |
Calculation Factor per meter length radiator at 75/65/20 °C in accordance with EN442
Characteristic equation: ф = KM x ΔTn
Height (mm) | 545 | 645 | |||
---|---|---|---|---|---|
Type | 21 | 22 | 21 | 22 | |
670 | 614 | 782 | 710 | 899 | |
870 | 819 | 1.043 | 947 | 1.198 | |
1.070 | 1.024 | 1.304 | 1.184 | 1.498 | |
1.270 | 1.229 | 1.565 | 1.421 | 1.798 | |
1.470 | 1.434 | 1.826 | 1.658 | 2.097 | |
1.670 | 1.638 | 2.086 | 1.894 | 2.397 | |
1.870 | 1.843 | 2.347 | 2.131 | 2.696 | |
2.070 | 2.048 | 2.608 | 2.368 | 2.996 |
Download the Heat calculator
Download the Correction Factors
Connection possibilities
TYPE 21-22
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Important notice: The green ECO air vent is essential for the proper working of the radiator and cannot be replaced by a traditional air vent as the radiator will keep on heating.