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6 Pack, 2" Mill Finish Round Insect Proof Mini Louvers With Screen, Overall Size 2.391", Fits 2" Hole Diameter, 0.803 SQIN Free Area.
4 Pack, 3" Brown Aluminum Round Insect Proof Mini Louvers With Screen, Overall Size 3.530", Fits 3" Hole Diameter, 1.735 SQIN Free Area.
6 Pack, 2" White Aluminum Round Insect Proof Mini Louvers With Screen, Overall Size 2.391", Fits 2" Hole Diameter, 0.803 SQIN Free Area.