| air filter | 4.94 | Inspect the air filter. | ||
| water filter | 2.76 | Devices that work like water filters also are popular. | ||
| oil filter | 1.25 | Oil filter. | ||
| cigarette filter | 1.12 | Cellulose acetate tow is a manmade fiber used to make cigarette filters. | ||
| software filter | 0.99 | Mandatory software filters bypass policies developed at the local level. | ||
| paper filter | 0.92 | ...a paper coffee filter. | ||
| carbon filter | 0.79 | Others have pumped the water through carbon filters. | ||
| furnace filter | 0.72 | Change the furnace filter every month. | ||
| fuel filter | 0.46 | Then the fuel filters got stopped up. | ||
| high-pass filter | 0.39 | Consequently the transmission is low, with the circuit behaving like a high-pass filter. | ||
| dialysis filter | 0.33 | All were using dialysis filters, or dialyzers, which help remove waste from the blood of patients with failed kidneys. | ||
| medium filter | 0.33 | This is like an oversized pleated media filter that has to be installed by a professional. | ||
| system filter | 0.33 | They also said moisture would likely clog system filters. | ||
| diesel filter | 0.26 | The refueling tank needed a gas filter, but was fitted with a diesel filter. | ||
| ladder filter | 0.26 | It will be appreciated that ladder filters with configurations other than the one considered so far are possible. | ||
| low-pass filter | 0.26 | A low-pass filter does the opposite of sharpening. | ||
| mesh filter | 0.26 | The steel mesh filters can be washed and reinstalled. | ||
| power filter | 0.26 | We will assume you are using an efficient undergravel, or internal power filter. | ||
| spam filter | 0.26 | A free spam filter called SpamWeasel helps, according to Rene LeBlanc of Scottsdale, Ariz. |