"No es un tubo, es un embellecedor, y no va cerrado por detrás."
Answer of the day 21-07-2026
Front wood fireplace C-303 TFK on 3 sides with the following characteristics:
In addition, the C-303 TFK Front Wood Fireplace comes with a gift of your choice from Wonderbox
Front C-303 TFK wood fireplace on 3 sides. This exceptionally crafted piece of steel up to 4 mm offers a unique experience. With a pull-out ashtray drawer, cast iron door and grill, and an advanced double combustion system, this fireplace perfectly combines functionality and style.
In addition, its 265 m³/h and 43 W tangential turbine ensures efficient heat distribution in your space.
Need a break? No problem, its OFF mode turbine with switch in position 0 allows you to take control. All this wrapped in an elegant cast iron and screen-printed glass that adds a touch of sophistication to your home.
What is combustion in a fireplace?
It is the chemical reaction that occurs between oxygen and fuel (firewood), with an initial contribution of fire at the beginning of the process.
What is double combustion in a fireplace?
The combustion of a basic chimney emits waste that is expelled by its draught, which ends up in the outside air and produces greater environmental pollution, as well as a great loss of heat and efficiency.
If the waste formed by the first combustion is reused as fuel, performance is improved. This process is known as double combustion, and it is carried out by injecting air into this waste. This second air intake improves the final performance of the chimney, reduces the elements ejected, improves fine performance, and keeps the interior cleaner.
What is the performance of a fireplace?
This value indicates the percentage of heat that is actually used to heat the room where it is located, produced by combustion. That is, of the 100% of the heat produced inside the fireplace, the value that really serves us to heat our home. For example, an efficiency of 71% indicates that 29% of the heat is lost in the chimney's own combustion chamber and 71% is emitted to the outside.
On the other hand, a different concept is energy efficiency, which is related to the performance that can be extracted from a fuel, depending on whether we use combustion, double combustion, primary air, secondary air... The greater the mechanisms for extracting all its accumulated energy from a fuel, the more efficient our fireplace will be.
What is a chimney deflector?
It is a piece that is placed in the upper part of the combustion chamber. It serves as a screen between the fire and the smoke outlet where the evacuation pipe is fitted.
It has a double function, on the one hand it prevents that when there is a lot of flame it can directly affect the tube, which would cause the smoke to accumulate in the combustion chamber of the stove as the flame is covering the natural outlet of the stove, while reducing the consumption of wood, since the deflector regulates the burning of wood, and it also serves to improve smoke evacuation, since the flame when it hits the baffle, heats it, and this heats the air at the top of the baffle making it weigh less, and causes it to exit through the tube upwards.
| Product | Front wood fireplace C-303 TFK + Direct gift |
| Brand / Manufacturer | FM Calefacción |
| Guarantee | 3 years |
| Energy certification | TO |
| Heat output (kW) | 11-14 |
| Yield (%) | 79 |
| CO emissions (%) | 0.1 |
| Smoke outlet (mm) | 200 |
| Smoke outlet area | Superior Male |
| Weight (kg) | 105 |
| Max size. Trunk (cm) | 62 |
| Heatable volume (m3) | 295 |
| Type of Combustion | Double |
| Pull-out ashtray drawer | Yes |
| Interior in | Foundry |
| Woodshed | Yes |
| Dual chamber | Yes |
| Plate warmer | No |
| Oven | No |
| Fans (turbines) | Tangential Turbine 265 m3/h, 43 w |
| Screen-printed glass | Yes |
| Dimensions cm (W x L x H) | 741x500x (2415:2900) |
| Primary air regulation | Yes |
| Secondary air regulation | Yes |
| Clean-glass system | Yes |
| Glass-ceramic resistance (ºC) | 750 |
| Heat resistance paint (ºC) | 800 |
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| Product | Front wood fireplace C-303 TFK + Direct gift | Front wood fireplace with turbine C-300 TFK + Direct gift | Milan Fireplace with Turbine 70cm | Ronda Fireplace with Turbine 70cm | Ronda Fireplace with Turbine 80cm | C-300 RK corner wood fireplace + Direct gift |
| Manufacturer | FM Calefacción | FM Calefacción | Joyma | Joyma | Joyma | FM Calefacción |
| Price | 1.715,00 € 1.457,75 € | 1.695,00 € 1.440,75 € | 1.687,40 € 1.603,03 € | 1.687,40 € 1.603,03 € | 1.762,48 € 1.674,35 € | 1.770,00 € 1.504,50 € |
| Guarantee |
3 years |
3 years |
3 years |
|||
| Energy certification |
TO |
TO |
||||
| Heat output (kW) |
11-14 |
11-14 |
16 |
16 |
18 |
11-14 |
| Yield (%) |
79 |
79 |
79 |
|||
| CO emissions (%) |
0.1 |
0.1 |
0.1 |
|||
| Smoke outlet (mm) |
200 |
200 |
250 |
250 |
250 |
200 |
| Smoke outlet area |
Superior Male |
Superior Male |
Superior Male |
|||
| Weight (kg) |
105 |
105 |
132 |
|||
| Max size. Trunk (cm) |
62 |
62 |
62 |
|||
| Heatable volume (m3) |
295 |
295 |
295 |
|||
| Type of Combustion |
Double |
Double |
Simple |
Simple |
Simple |
Double |
| Pull-out ashtray drawer |
Yes |
Yes |
||||
| Interior in |
Foundry |
Optional vermiculite or cast iron |
||||
| Woodshed |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
| Dual chamber |
Yes |
Yes |
No |
No |
No |
Yes |
| Plate warmer |
No |
No |
No |
|||
| Oven |
No |
No |
Yes |
No |
Yes |
No |
| Fans (turbines) |
Tangential Turbine 265 m3/h, 43 w |
Tangential Turbine 265 m3/h, 43 w |
||||
| Screen-printed glass |
Yes |
Optional |
Yes |
|||
| Dimensions cm (W x L x H) |
741x500x (2415:2900) |
741x500x (2415:2900) |
86x47x133 |
84x47x120 |
94x66x123 |
1008x660x(2415:2900) |
| Primary air regulation |
Yes |
Yes |
Yes |
|||
| Secondary air regulation |
Yes |
Yes |
Yes |
|||
| Clean-glass system |
Yes |
Yes |
Yes |
Yes |
Yes |
Yes |
| Glass-ceramic resistance (ºC) |
750 |
750 |
750 |
750 |
750 |
750 |
| Heat resistance paint (ºC) |
800 |
800 |
800 |
|||
| Fuel |
Firewood |
Firewood |
Firewood |
|||
| Wall |
Straight |
Straight |
Straight |
|||
| Difficulty |
Advanced |
|||||
| Draft Valve |
Yes |
|||||
| View product | View product | View product | View product | View product | View product |
This product includes a guaranteed free gift, worth 99,90 €.
We will email you all the details of the gift you have selected, so you can use it whenever you wish. Most Wonderbox gift boxes are valid for years; the email will include all the information you need.
We will send the gift once you have received your purchase and confirmed that everything is correct.
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