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Actual sizes vary depending on brand. 5" depth is really
4 3/8, or 4 3/4, or 5 1/4 .
 > TopTech > 20x25x4 - TopTech TT-FM-2025, MERV 11
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DTT-FM-2025 20x25x4 (19 3/8x24 3/8x4) TopTech Air Filter - Furnace Filter (MERV 11) - AfterMarket
ONLY: $31.35 each - Click "BEAT THE PRICE DEAL" On Top Menu to see the deal details

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DTT-FM-2025 20x25x4 (19 3/8x24 3/8x4) TopTech Air Filter - Furnace Filter (MERV 13) - AfterMarket
ONLY: $35.50 each - Click "BEAT THE PRICE DEAL" On Top Menu to see the deal details
DTT-FM-2025 20x25x4 (19 3/8x24 3/8x4) TopTech Air Filter - Furnace Filter, ODOR DEFENSE®
ONLY: $42.90 each - Click "BEAT THE PRICE DEAL" On Top Menu to see the deal details