RI Audio 8" Shallow Hyper Vented Box Enclosure For A Single Sub 5/8" MDF Black Check out the brand new ported/vented 8" carpeted single subwoofer truck box from RI Audio. With this box's 8" subwoofer mounting hole your system will deliver deep bass while keeping a clean and sleek look inside your vehicle. This box is constructed out of a sturdy 5/8" High-Grade MDF baffle, wrapped in a durable charcoal carpet, and features pre-installed terminals to make installation as easy as possible. Please see below for more features and specifications. Features And Specifications Outside Height: 12-15/16" Outside Length: 19-7/8" Outside Depth: 5-11/16" Volume: 0.40 Cubic Feet Mounting Depth: 5" Mounting Hole Width: 7" Tuning Frequency: 34HZ Weight: 14.70 lbs Opening fits 8" Subwoofer Constructed from 5/8" MDF (with a 5/8" Faceplate) Pre-Installed Terminal Cup Ultra-Rich Charcoal Carpet Dual Shallow Hyper Vented Dado & Miter Construction This listing is for one 8" single subwoofer box