18x20x1 Furnace Filters
18X20X1 Furnace Filters
Nominal size : 18x20x1
Actual size :17 1/2" x 19 1/2" x 3/4"
This filter is a high quality, economical aftermarket replacement filters.
Made of 100% synthetic media. It will not absorb water, preventing the growth of mould, fungi and bacteria. Made with fire retardant materials. A rigid constructed housing with efficiently spaced pleats, enabling excellent surface capacity for better filtration of airborne particles.
- 94.7% EFFECTIVE (best on the market) - that's 10 times better than a throw-away filter.
- EPA APPROVED ANTI-MICROBIAL COATING - to prevent mold and bacteria from growing.
- HOLDS AN AMAZING 165 GRAMS OF DIRT. The most of any filter on the market.
Air filters are made out of electro-static polypropylene mesh and polyester media with an extruded stainless steel frame, mitered, screwed corners, and galvanized wire mesh screening.
Spacing of the pleats allows for air travel across the entire surface of the filter and increased filtering capacity. Larger dust particles are captured at the top and bottom of the pleat. Smaller particles will be caught in the sides of the pleat surface.
The filter is constructed from a rigid, fire retardant material. It performs extremely well even in difficult operating conditions. The filtering media is glued to the frame itself, ensuring that the air will not be able to escape, or bypass the filter.
Why Should You Replace Furnace Air Filters Regularly?
If your furnace filter is dirty, all that dirt and dust makes air flow more sluggish, forcing your furnace to work harder to heat your home. This is a needless waste of energy and contributes to higher heating costs.
Dirty filters also do a poorer job of preventing that dust from forming a build-up in your heating system, which in turn could lead to maintenance problems down the road. After all, the main purpose of a furnace filter is to protect your furnace equipment.