Miami Tech R-6 Flanged Register Box - 18" x 18" - 30 Gauge

Product Features:

• 1" perimeter flange provided for easy installation. 
• Design includes 1/2" drywall lip and rounded corners for added safety. 
• Opening 1/4" oversized to accommodate register/grille. 
• Dual Bead design for added strength. 
• Black diffuser board coated with EPA registered anti-microbial protective acrylic agent along air stream side.