This GFCI tester uses advanced circuitry and a patent-pending proprietary design to precisely detect the required low resistance (less than 10ohms) on ground wire and provides a clear and easy-to understand single LED readout indication for correct wiring or Bad Ground
120 x 1-1/2"
the handle features a comfortable and ergonomic grip
multi directional airflow
Microparticle Pleated Furnace Filter, 10x20x1- In. Canning Equipment This GFCI tester uses advanced10" x 20" x 1", Naturalaire Micro Particle Pleated Furnace Filter, Electrostatically Charged, 100% Synthetic Wire Backed Media, Clay Coated Frame, Merv Rating 10, 90 Day Filter, Effective Against Pollen, Dust Lint, Dust Mites, Pet Dander, Mold, Bacteria, Virus Carriers, Smoke, Smog, Lead Dust.