Which Filter & Exhaust?

I need some help matching up a filter and exhaust. I'm going to go with a 250w MH/HPS, size of box will be 2x2x5 or 6. The options I have are;

Exhaust's
4" S&P Fan TD160/100 silent - Air flow 160m3/hr Diameter 100mm
4" S&P Fan TD250/100 - Air flow 250m3/hr Diameter 100mm

Filters
100mm Fresh filter - Air Flow 175m3 per hour
RhinoPro 100x200mm- 255 m3/h
IKON Can/Filter Mini 100mmx150mm

What would be a good match up me?

Thanks.

The bigger the better. If you get one that isn't strong enough, you wasted your money. If you get one too strong, just dial it back with a speed controller.

grobofotwanky said:

The bigger the better. If you get one that isn't strong enough, you wasted your money. If you get one too strong, just dial it back with a speed controller.

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Agreed!! But with the size of your box the 160 is more than enough, & still get a speed controller. For filter get as big as you can fit, it will last longer, put less wear on your fan, more efficient, and it's quieter.