| the return air duct | 0.35 |
| remove dust | 0.69 |
| remove allergen | 0.50 |
| remove particle | 0.38 |
| filter the air | 0.34 |
| clean the air | 0.31 |
| save loved ones | 0.29 |
| remove 99.97% of all pa… | 0.25 |
| prevent other contamina… | 0.25 |
| save money | 0.20 |
| allow the most possible… | 0.16 |
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| clean | 0.79 |
| dirty | 0.69 |
| important | 0.53 |
| efficient | 0.45 |
| reusable | 0.41 |
| rectangular | 0.40 |
| directional | 0.31 |
| small | 0.29 |
| the best fit | 0.29 |
| washable | 0.23 |
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| replaced | 0.79 |
| changed | 0.71 |
| cleaned | 0.59 |
| clogged | 0.59 |
| checked | 0.56 |
| created equal | 0.41 |
| easy to install | 0.41 |
| analyzed in the 90 days | 0.34 |
| rated | 0.34 |
| used in hvac systems | 0.29 |
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