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 Perfect Fit Subwoofer 12-inch 02-04 Impreza/WRX/STi Sedan Internal airspace: 1.13-1.16 cubic feet. Mounting Hole Dia: 11.0". Weight: 15 lbs. Flush Trim Ring inside Dia: 11.25".

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 Perfect Fit Subwoofer 10-inch 02-04 Impreza/WRX/STi Sedan Internal airspace: .85 -.90 CF. Mounting Hole Dia: 9.125". Weight: 13 lbs. Flush trim ring inside dia: 8.875".

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 Perfect Fit Subwoofer 12-inch 05-07 Impreza/WRX/STi Sedan Internal airspace: 1.13-1.16 cubic feet. Mounting Hole Dia: 11.0". Weight: 15 lbs. Flush Trim Ring inside Dia: 11.25".

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 Perfect Fit Subwoofer 10-inch 05-07 Impreza/WRX/STi Sedan Internal airspace: .85 -.90 CF. Mounting Hole Dia: 9.125". Weight: 13 lbs. Flush trim ring inside dia: 8.875".

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 Perfect Fit Subwoofer 12-inch 02-07 Impreza/WRX Wagon Internal airspace: 1.01-1.13 cubic feet. Mounting Hole Dia: 11.0". Weight: 15 lbs. Flush Trim Ring inside Dia: 11.25".

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 Perfect Fit Subwoofer 10-inch 02-07 Impreza/WRX Wagon Internal airspace: .80 -.90 CF. Mounting Hole Dia: 9.125". Weight: 15 lbs. Flush trim ring inside dia: 9.25".

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 Perfect Fit Subwoofer 10-inch 08+ Impreza/WRX/STI Hatchback Internal airspace: .6 -.65 CF. Mounting Hole Dia: 9.125". Weight: 12 lbs.

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 Perfect Fit Subwoofer 10-inch 08+ Impreza/WRX/STI Hatchback with Grill Internal airspace: .6 -.65 CF. Mounting Hole Dia: 9.125". Weight: 12 lbs.

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