Art. no.: 1718
Roof curb
The brackets make it easy to fit the roof curb to the roof pitch, and also function as a silencer. Manufactured from galvanised sheet steel and insulated with a 50 mm rockwool sheet and a perforated inner plate.
The roof curb is fitted with plastic piping and conduits for electric cables.
| Dimensions and weights | ||
|---|---|---|
| Weight | 24.2 | kg | 
| TG | Hz | ΔLA | 63 | 125 | 250 | 500 | 1k | 2k | 4k | 8k | 
| 
 300 - 800  | 
dB  | 
10  | 
0  | 
3  | 
7  | 
15  | 
26  | 
15  | 
6  | 
2  | 
| 
 400 - 800  | 
dB  | 
9  | 
1  | 
3  | 
7  | 
13  | 
19  | 
10  | 
3  | 
2  | 
| 
 540-800  | 
dB  | 
8  | 
0  | 
3  | 
6  | 
9  | 
12  | 
8  | 
5  | 
5  | 
| 
 540-1230  | 
dB  | 
10  | 
0  | 
6  | 
6  | 
14  | 
17  | 
12  | 
6  | 
5  | 
| 
 640-800  | 
dB  | 
5  | 
1  | 
2  | 
4  | 
7  | 
8  | 
6  | 
4  | 
4  | 
| 
 640-1230  | 
dB  | 
8  | 
0  | 
4  | 
4  | 
12  | 
15  | 
8  | 
5  | 
5  | 
| 
 740-1230  | 
dB  | 
7  | 
0  | 
3  | 
4  | 
10  | 
13  | 
7  | 
4  | 
4  | 
| 
 940-1200  | 
dB  | 
6  | 
0  | 
3  | 
4  | 
8  | 
9  | 
6  | 
4  | 
4  | 
| A | B | C | D | E | |
| TG 300-800 | 800 | 293 | 183 | 289 | 245 | 
| TG 400-800 | 800 | 393 | 283 | 389 | 330 | 
| 
 Hole measurement in roof = B+10 mm  |