I have a 6 inch hood but my exhaust ventilation ducting and fan are 4 inches. I had to put a 6-4 reducer on the hood and hook my 4 inch ducting up to it (its grey from duct tape used to seal everything up)
Here is an online store.. http://homeharvest.com/sunlightsupplyss1supersunhps.htm you can also search ebay and craigslist for good deals.
Here is an online store.. http://homeharvest.com/sunlightsupplyss1supersunhps.htm you can also search ebay and craigslist for good deals.