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21x21x4.5 Ruud PD540012 Air Filter
$39.83
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Actual Dimensions: 20.75 x 20.75 x 4.38. Brand: Accumulair. 21x21x4.5 Ruud PD540012 substitute whole house filters, specifically engineered to replace original brand Ruud PD540012 air filters. Completely box-formed – no forming or combs needed. MERV graded to ASHRAE 52.2 test specs ensuring filtration to the level of the OEM Ruud PD540012 filter. Notice: Example air filter picture as displayed is not to scale and is there to show design purposes only. Name brands and Ruud PD540012 part numbers shown for filter replacement identification only.
| Quantity of Filters per Case | 2 |
|---|---|
| Efficiency Rating | MERV 8, MERV 11, MERV 13, Carbon MERV 8 |
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