Massive size for increased coverage area and excellent uniformity. Allows closer placement to plants. Includes tempered glass, removable frame, built-in socket & 15 ft lamp cord. Completely sealed - features gasketed glass and hinged frame to hold glass tightly in place. Powder-coated galvanized steel body. 95% reflective European aluminum interior offers excellent reflectivity and diffusion. Swing stop retention cable keeps glass from abruptly swinging down. Captured thumb screws & closure mechanism for ease of use and excellent sealing. Air-cooling flanges now have a bead ring to keep ducting securely in place. Dimensions Length: 32.4†Width 26.5†Height: 7.5†Overall Dimensions: 36.5L x 26.4W x 8.5H Glass Frame Dimensions: 32.4L x 26.4W Instruction PDF