THUNDER (TM) EcoSun Medium 8-Inch White Air Coolable Reflector for Plants with Easy Location Mounting (5 Year Manufacturer Warranty !) Dimension 25" x 20" x 10" (L x W x H) / Vent Size 8" Tempered Glass broadens the amount of light allowing close placement of plants for broad light dispersion. Equipped with a slide glass panel for easy bulb replacement. Steel construction encased in fully heavy duty powder-coated galvanized steel. Made 95% reflective German aluminum for excellent reflectivity. Removable slide glass panel to maximize light output by up to 25%. Fully packaged with built-in socket, 15' pre-wired lamp cord and hangers. Compatible with High Pressure Sodium Bulbs (HPS) and Metal Hallide Bulbs (MH) 250W  1000W. Compatible with Square or SL Reflector Light Socket Connection. Socket is compatible with E39. V-Hangers included 5 Year Manufacturer Warranty ! / Bulb and Fan NOT Included