Does this light require cooling?

http://cgi.ebay.com/ws/eBayISAPI.dl...o=DR&its=S%2BI%2BSS&itu=ISS%2BUCI%2BSI&otn=12


This is a 400Watt MH Halide and a 400 Watt HPS Sodium Light, one will be used for the vegetation and the other for the flowering.

Is this light going to be very hot in which I'll need to have vents to the light? I'm only growing 2 - 4 plants in a small section so I'm only using one light source, I'm hoping I wont have to worry about keeping it cool

well it depends how small the space is, say your using a 3x3 area then you probably dont need to as long as you have some venting