A 12" sealed sub box is a compact, airtight enclosure designed for a 12-inch subwoofer, ideal for achieving clear and controlled bass. Unlike vented or ported enclosures, sealed boxes restrict air movement, resulting in more accurate sound reproduction with less distortion. This makes them a top choice for those who enjoy tight, punchy bass across various music genres. They're also sp... https://soundskinsglobal.com/products/soundskins-enclosures-universal-single-sealed-12-premium-usa-made-subwoofer-box-with-bed-liner-spray-finish