F-STR Conical Duct Filter for Round Ventilation Systems

F-STR

F-STR Conical Duct Filter

The F-STR duct filter is designed for installation in round duct connections with ventilation fittings. Its conical shape is engineered to provide improved filtration and reduce pressure losses in the airflow system.

Key Features

Designed for installation in round ventilation ducts.
Conical shape for optimized filtration and minimized pressure losses.
Available filtration classes: EU3/G3/ISO COARSE 45%, EU4/G4/ISO COARSE 70%, EU5/M5/ISO ePM10 55%.
Maximum operating temperature: 120°C.
Recommended maximum flow velocity:
- For EU3/G3/ISO COARSE 45% class: V=14m/s
- For EU4/G4/ISO COARSE 70% class: V=10m/s
- For EU5/M5/ISO ePM10 55% class: V=4.5m/s

Technical Data

Pressure losses for the F-STR filter depend on the filtration class and airflow. It is recommended to assume a total, final pressure loss of P_t=1.5P_i, where P_i is read from the pressure characteristic graphs.

Nominal Ød [mm]	L [mm]	Surface Area [m²]	Mass [kg]
100	220 +/- 20	0,04	0,03
125	260 +/- 20	0,05	0,05
160	340 +/- 20	0,08	0,09
200	420 +/- 25	0,13	0,13
250	540 +/- 30	0,22	0,21
315	670 +/- 30	0,36	0,33
400	960 +/- 35	0,55	0,54
500	1100 +/- 50	0,69	0,96
630	1350 +/- 50	1,37	1,34