A+2000 Washable Air Filter Electrostatic MERV8 Lifetime Furnace HVAC Choose Size S$ 102.45 to S$ 148.62
Permatron DustEater DE-1" Permanent Electrostatic Filter Washable HVAC Furnace S$ 115.26 to S$ 144.76
A+2006 High Flow Electrostatic Filter Furnace HVAC Geothermal Washable Permanent S$ 94.75 to S$ 102.45