Thunder (TM) Sunmax 6-Inch White Air Coolable Reflector for Plants with Easy Location Mounting (5 Year Manufacturer Warranty !) Dimension 37" x 27.5" x 10" (L x W x H) / Vent Size 6" Broad Light Dispersion: Tempered Glass broadens the amount of light allowing close placement of plants for. Equipped with a collapsable glass panel for easy lamp replacement. Steel construction encased in fully heavy duty poweder-coated galvanized steel. Made 95% reflective German aluminum for excellent reflectivity. Equipped with an integrated rentation bar for an air tight seal and solid grip of glass. Fully packaged with built-in socket, 15' pre-wired lamp cord. Compatible with HPS and MH bulbs 250W - 1000 W. Compatible with Square or SL Reflector Light Socket. Socket E39. 5 Year Manufacturer Warranty !