Box for panel filters PF5–PF9.
Removable lid with 4 knobbed screws for simple filter exchange, inspection and cleaning.
Aerodynamic construction due to studs with radius.
Sturdy filter holding frame with fixing steel thread clamps.
Tight filter seat prevents bye-pass leakage.
Large label, for filter usage data, on lid.
Fulfils the requirements for air tightness class D.
Ideal as addition to controlled residential ventilation in order to improve the air quality.
NOTE! Panel filters, PF5–PF9, must be ordered separately!