Why Choose GFX/Carbon Series Atrend?From design to delivery Atrend products are tested vigorously to ensure sound quality and accurate engineering. Working with only the latest in computer automated software and machinery Atrend continues to be a trend setter in the marketplace. Atrend delivers quality results by utilizing only the most efficient engineering and manufacturing processes.Miter & Dado Construction-All of our Atrend and Bbox subwoofer enclosures are engineered and constructed to be the strongest on the market. Our outside panels feature our signature Miter and Dado construction which adds extra reinforcement and structural integrity to our subwoofer enclosures. Ultimately these construction techniques provide unsurpassed build and sound quality in Bbox enclosures.Attention to Detail-3/4 MDF Construction - Atrend feature high-quality 3/4 MDF panels to withstand the deepest bass.Atrend s Trick Glue - Our Enclosures are built using Atrend s special blend of Trick Glue for up to 3600 PSI of holding ability while maintaining a flexible and durable seal.Premium Plush Black Carpet & Terminal Cups - Premium Plush Black Carpet is standard on all GFX/Carbon Series Enclosures.