Non-Metallic Enclosure (Style B) - Weather Resistant - 15.68 in L x 11.73 in W x 6.30 in H - Acrylonitrile Butadiene Styrene (ABS) - Solid Cover - Gray. - External 15.68 x 11.73 x 6.3 Inches - Internal 14.88 x 10.89 x 6.03 Inches