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21x21x4.5 Rheem Protech 540012 Air Filter
$39.83
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Actual Dimensions: 20.75 x 20.75 x 4.38. Brand: Accumulair. 21x21x4.5 Rheem Protech 540012 compatible whole house air filters, exactly built to replace OEM Rheem Protech 540012 filters. Completely box-formed with no forming or combs required. MERV graded to ASHRAE 52.2 test specs establishing operation as good or better than the original manufacturer Rheem Protech 540012 air filter. Note: The example filter image shown is not true to size and is included to show style purposes only. Trade names and Rheem Protech 540012 part numbers are 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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