The ProX X-RCF-HDL6ALAX4W is designed specifically to house and protect 4 RCF HDL6-A or HDL 26-A Line Array Speakers including with the fly bar attached which conveniently allows you to be ready to go. This professional speaker case employs a 3/8" laminated plywood that has a hard shell with internal impact resistant padding to provide the best protection for your investment. No matter where you take your speakers you can have peace of mind and protected from damage during transit or in storage.