Tru Spec Back Vented Prefab Four Up Port 8" Subwoofer Enclosure

Tru Spec Prefabricated enclosures are simple, straight to the point, true to spec sub enclosures with proper airspace and non restrictive port area that allows you to have custom box performance at a reasonable price. Net Internal Volume: 3.50 ft3 Tuning Frequency: 35 Hz Port Area: 52.00 inch2 Cutout diameter: 7.45" Tru Spec Back Vented Prefab Four Up Port 8" Subwoofer Enclosure This listing includes: (1) Tru Spec Back Vented Prefab Four Up Port 8" Subwoofer Enclosure Tru Spec Prefabricated enclosures are simple, straight to the point, true to spec sub enclosures with proper airspace and non restrictive port area that allows you to have custom box performance at a reasonable price. Total woofer displacements factored in: 0.24 cuft (0.06 cuft per driver) *What does this mean? You will have 3.5 cubic feet of internal volume AFTER your sub displacements. (Most 8"s are 0.05- 0.06 per driver) Box external dimensions: Length: 34.00" Width: 14.00" Height: 22.00" Specifications: Material Thickness: 0.75" Net Internal Volume: 3.50 ft3 Tuning Frequency: 35 Hz Port Area: 52.00 inch2 Cutout diameter: 7.45" Flush trim diameter: 9.00"