Description
The Soler & Palau FB4 Filter Box Assembly filters incoming outdoor or recirculated air within inline ventilation ductwork. Installed directly into 4-inch round duct line in HVAC systems, the sealed enclosure holds a high-efficiency MERV 8-rated pleat filter. Forcing air through the dense filter media traps dust, pollen, lint and airborne particulates before air enters the air handler or living space. Capturing dissolved particles preserves indoor air quality, keeps downstream ductwork clean, and supports steady ventilation airflow across continuous inline operations.
