Plastic rectangular duct 7020, 2 meters long and with a cross-section of 60x120 mm, is used in exhaust or supply ventilation systems. One of the elements of plastic ventilation ducts Plastivent for ventilation of domestic and commercial premises.
Application
- For supply or exhaust ventilation of various premises.
- To form a system flat ventilation ducts.
Design
- The channel is made of white PVC.
- Section: 60x120 mm.
- Channel length 2 meters.
- Connected to each other using connectors of appropriate sections.
Dimensions
| Dimensions | < td style='text-align: center, background-color: #b7c0c2,'>aa1 | b | b1 | L | |
| mm | 60 | 57 | 122 | 119 | 2000 |
Table for selection of a rectangular duct
| Air duct cross-section, mm | Air flow rate at air speed, m?/h | ||||
| 2 m/s | 3 m/s | 4 m/s | 5 m/s | 6 m/s | |
| 55x110 | 43 | 65 | 87 | 109 | 130 |
| 60x120 | 52 | 78 | 104 | 130 | 155 |
| 60x204 | 88 | 132 | 176 | 220 | 265 |
| 90x220 | < td style='text-align: center,'>142214 | 285 | 356 | 428 |
Example 1. It is necessary to select a root air duct for a supply and exhaust unit with a design capacity of 430 m³/h. The speed in the root section should be within 5-6 m/sec. According to the table, an air duct with a cross section of 90x220 mm fits these parameters.
Example 2. It is necessary to select an air duct for the office exhaust system, which extends from the root air duct to the grille. The estimated capacity in this branch is 80 m³/h. The speed in the side air duct should be within 3-4 m/sec. According to the table, an air duct with a cross section of 55x110 mm is suitable.
Example 3. A flat duct is required for a kitchen hood. Estimated extraction capacity 400 m?/h. The speed is allowed within 5-6 m/sec. For this task, according to the table, an air duct with a cross section of 90x220 mm is suitable.
