Sciencetech's 201-1K-QTH lamp housing allows for vertically mounted 500W-1500W DC operated Quartz Tungsten Halogen (QTH) filament lamps. Such lamps produce a large VIS-NIR output and some UV light. The spectral output is smooth and approximates a 3300K black body. Since each wattage lamp has its own socket style, a QTH lamp housing may only accommodate the selected wattage lamp once the socket style is specified. The unit is forced air-cooled with a blower at the top of the housing hat draws air from the bottom intake and expels it out the top of the housing. The lamp socket is mounted vertically on alignment pins such that the lamp's filament can be properly centered to the housing's back spherical reflector and front light exit port for optimum light output efficiency. The lamp house comes standard with an F/1.5 BK7 Lens to collect light from the QTH lamp.Please note that this product requires the bulb to be purchased separately and included in the quotation as a separate line item. Please contact your authorized Sciencetech technical sales staff member for any questions.