Prefilter
Thickness: 4 inches (95mm), 2 inches (44mm), 1 inch (22mm).
Thickness: 4 inches (95mm), 2 inches (44mm), 1 inch (22mm).
Choose High-lofted cotton and synthetic media blend Choose High wet-Strength beverage board frame.
Filtration efficiency (Test by weighing dust).
Efficiency Rate: G1-G4.