Enhance your audio setup with the Valcom V-9915M-5 Backbox, designed specifically for 4" or 8" ceiling speakers. This pack of five metal backboxes is rust-resistant, ensuring longevity and reliability. They effectively shield your speakers from debris, maintaining sound clarity and quality. The robust metal construction provides added durability. Ideal for both commercial and residential installations, these backboxes are a must-have for a clean and professional audio setup. Upgrade your sound system today!