Roof Hood, GLAK
Great roof hood with long throw lengths and low pressure drop
Suitable for comfort and process / industrial ventilation
The roof hoods, type GLAK, are an architectural finish to exhaust on roofs.
The hood is suitable for both comfort and process/industrial ventilation, and with its noiseless design makes it particularly suitable for areas where there is a great demands to the environment and densely populated areas.
The design of the hood ensures that the air is effectively exhausted with an upward jet. This prevents precipitation of the contaminate air, meaning that soiling of the roof around the hood is also avoided.
The design ensures great throw height at a very low pressure drop, which reduces air resistance, energy consumption and operating costs if the velocity of the hood is dimensioned according to recommended instructions.
The hoods are made of galvanised steel, which is resistant to common corrosion effects in comfort or process/industrial ventilation. We also offer hoods in stainless steel and according to customer wishes.
Roof Hood, GLAK Ø 160
| Item no. | Description |
|---|---|
| GLAK160GH1 | Roof Hood, GLAK Ø 160 mm Height 320 mm Galvanised steel |
| GLAK160GH2 | Roof Hood, GLAK Ø 160 mm Height 640 mm Galvanised steel |
Roof Hood, GLAK Ø 200
| Item no. | Description |
|---|---|
| GLAK200GH1 | Roof Hood, GLAK Ø 200 mm Height 400 mm Galvanised steel |
| GLAK200GH2 | Roof Hood, GLAK Ø 200 mm Height 800 mm Galvanised steel |
Roof Hood, GLAK Ø 250
| Item no. | Description |
|---|---|
| GLAK250GH1 | Roof Hood, GLAK Ø 250 mm Height 500 mm Galvanised steel |
| GLAK250GH2 | Roof Hood, GLAK Ø 250 mm Height 1000 mm Galvanised steel |
Roof Hood, GLAK Ø 315
| Item no. | Description |
|---|---|
| GLAK315GH1 | Roof Hood, GLAK Ø 315 mm Height 720 mm Galvanised steel |
| GLAK315GH2 | Roof Hood, GLAK Ø 315 mm Height 1300 mm Galvanised steel |
Roof Hood, GLAK Ø 400
| Item no. | Description |
|---|---|
| GLAK400GH1 | Roof Hood, GLAK Ø 400 mm Height 900 mm Galvanised steel |
| GLAK400GH2 | Roof Hood, GLAK Ø 400 mm Height 1600 mm Galvanised steel |
Roof Hood, GLAK Ø 500
| Item no. | Description |
|---|---|
| GLAK500GH1 | Roof Hood, GLAK Ø 500 mm Height 1080 mm Galvanised steel |
| GLAK500GH2 | Roof Hood, GLAK Ø 500 mm Height 2000 mm Galvanised steel |
Roof Hood, GLAK Ø 200
Roof Hood, GLAK Ø 630
| Item no. | Description |
|---|---|
| GLAK630GH1 | Roof Hood, GLAK Ø 630 mm Height 1260 mm Galvanised steel |
| GLAK630GH2 | Roof Hood, GLAK Ø 630 mm Height 2100 mm Galvanised steel |
Roof Hood, GLAK Ø 710
| Item no. | Description |
|---|---|
| GLAK710GH1 | Roof Hood, GLAK Ø 710 mm Height 1500 mm Galvanised steel |
| GLAK710GH2 | Roof Hood, GLAK Ø 710 mm Height 2100 mm Galvanised steel |
Roof Hood, GLAK Ø 800
| Item no. | Description |
|---|---|
| GLAK800GH1 | Roof Hood, GLAK Ø 800 mm Height 1580 mm Galvanised steel |
| GLAK800GH2 | Roof Hood, GLAK Ø 800 mm Height 2100 mm Galvanised steel |
Roof Hood, GLAK Ø 900
| Item no. | Description |
|---|---|
| GLAK900GH2 | Roof Hood, GLAK Ø 900 mm Height 2100 mm Galvanised steel |
Roof Hood, GLAK Ø 1000
| Item no. | Description |
|---|---|
| GLAK1000GH2 | Roof Hood, GLAK Ø 1000 mm Height 2100 mm Galvanised steel |
Roof Hood, GLAK Ø 1250
| Item no. | Description |
|---|---|
| GLAK1250GH2 | Roof Hood, GLAK Ø 1250 mm Height 2100 mm Galvanised steel |
Features and Benefits
- An architectural finish on the roof
- Suitable for comfort and process/industrial ventilation
- Strong strength at very low pressure loss that reduces the energy consumption
- Noiseless design
- Protected against rain and snow
Construction, Velocity and Protection
The ventilation hoods are made up of an inner pipe, with a female connection at the bottom and with a net mounted in the pipe. For protection against rain and snow, the hood is fitted with a outer pipe, which is offered in either height H1 (short pipe) or H2 (long pipe).
- When the system is in operation, there is 100% protection against occurrence of precipitation, based on experience (provided that the recommended velocity are adhere to).
- When the system is out of operation, obtains a protection rate of 90% with H2 (long pipe), based on experience.
- When the system is out of operation, obtains a protection rate of 75% with H1 (short pipe), based on experience.
To increase the throw length, the hood is completed with a narrowing at the top. The throw length corresponds approximately to the velocity in the hood. As an example: If there is a velocity of 4 m/s through the hood, the throw length is approx. 4 meters. The great throw height and the very low pressure loss are achieved by the fact that there are no annoying obstacles in the hood.
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