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Custom 4th order blow-thru truck bed subwoofer box design blueprint package by EZ DB's Designs. Image features a high-contrast yellow "4th ORDER BLOW-THRU" keyword accent and an overlapping 3-box cluster of massive truck bed enclosures engineered for precise cab-to-bed accordion boot transitions.

Custom 4th Order Bandpass Blow-Thru Subwoofer Box Design

$114.99