CFS Cut to Fit Carbon Pre-Filter Pad, 16 x 48 in, Air Cleaners & HVAC

• ONE SHEET, 16 BY 48 INCHES - The largest single sheet on this page, and the one to pick if you are covering a furnace return or a wide range hood. Cut it with ordinary scissors: lay the old filter on top, trace round it, cut just inside the line so the new pad sits flush in the frame.
• ACTIVATED CARBON FOR ODORS - Carbon adsorbs the odor molecules that a mechanical filter passes straight through: cooking smells, smoke, pets, damp basements, bins. That is a different job from trapping particles, which is why carbon is usually run alongside a HEPA or pleated filter rather than instead of one.
• IT MAKES YOUR MAIN FILTER LAST LONGER - Used as a pre-filter, the pad catches the dust, lint and pet hair that would otherwise load up your HEPA or pleated filter. That layer is cheap and easy to change; the filter behind it is not. Swapping the pad every few months is what stretches the interval on the expensive one.
• FITS MORE THAN AIR Cleaners - Range hoods, furnace returns, wall and floor vents, window air conditioners, humidifiers and register covers all take the same treatment. If it has a frame or a grille and you can measure it, you can cut a pad for it.
• WORKS WITH COMMON Cleaner SIZES - Cuts to fit HPA100, HPA200, HPA300, HPA020, HPA030, HPA090, HPA250, HPA3100 and HPA5100 through HPA5300 frames, plus the 17000, 18150, 40100, 40200, 50100, 50150, 50250, 50300, 60500 and 63000 series. Because it is cut to size it is not limited to the models listed. Compatible pad made by CFS, not an original manufacturer part.

CFS cut to fit activated carbon pre-filter pad, one sheet measuring 16 by 48 in, for air Cleaners, range hoods, furnace returns, vents and window air conditioners. This is the largest single sheet in the range, which makes it the one to pick for a furnace return or a wide range hood where a narrower sheet would need joining. It ships as a continuous sheet rather than a pre-cut filter, so one pad covers whatever you need it for instead of only fitting one machine. Cutting it is simple: lay the old filter or grille cover on top, trace around it, and cut just inside the line with ordinary scissors so the new pad sits flush inside the frame. Carbon does a different job from a mechanical filter, and it is worth knowing which one you need. A HEPA or pleated filter traps particles by physically catching them in the fibres. Activated carbon adsorbs odor molecules, which are far too small to be caught that way and pass straight through a particle filter. That is why carbon is normally run alongside a main filter rather than instead of one, and why adding a carbon layer helps with cooking smells, smoke, pets, damp basements and bins when a HEPA filter on its own has not. The second reason to fit one is cost. Used as a pre-filter, the pad sits in front of your main filter and catches the dust, lint and pet hair that would otherwise load it up. The pad is cheap and takes a minute to change; the HEPA filter behind it is neither. Changing the pad every few months is the simplest way to stretch the replacement interval on the expensive filter. It cuts to fit HPA100, HPA200, HPA300, HPA020, HPA030, HPA090, HPA250, HPA3100 and HPA5100 through HPA5300 frames, along with the 17000, 18150, 40100, 40200, 50100, 50150, 50250, 50300, 60500 and 63000 series. Because it is cut to size rather than moulded, it is not limited to the models named here. This is a compatible pad made by CFS, not an original manufacturer part, and model numbers are used for reference only.