Okay guys, I searched for hours over a few weeks with no real luck finding a shop with the works. Then last night I lucked upon an incredible site. AmericanHVACparts.com - DUCT WORK and FITTINGS I linked directly to the duct and fittings section but they have lots of everything. Hope this helps.

Great find.
Lowes can order anything they dont stock FYI in HVAC fittings

Sub

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hi, ok im changing shades from normal 600watters to air cooled tubes. i have a 5 inch rvk extractor which is vented up into the atic space. with both 600 hps on without air cooled shades and my rvk 5 inch and carbon filter running my temps are at hi end of 70's. 78 to be persise. so im adding cool shades to hopfully lower the temps down. all 5inch with 5 inch ducting and a 5 inch hole into atic. my rvk extractor is in the grow space hi up at the moment. but i want to put it in the atic extracting thru both cool tube shades. that will make it about 4 meters of ducting from shades to extractor. will that have anoth pull onit at that disstance??? i want extract in the atic because of noise

cheers

and why shouldnt heat from 1 lamp be passed over another lamp?? see that alot with these air cooled tube shades. ive been told long as its a 5inch extractor for 2 600 watters and no more then its fine. and vertical grows they use multiple lamps in 1 tube

its in the details

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Good info... I'm setting up an attic grow right now and am going to be running a 400 watt ventable hood to begin with.

What I'm not understanding about most threads on venting with hoods is the removal of odor from the room. How is this being done seeing that fresh air is being ducted in and only running through the hoods, to a fan, through a filter and out the roof. I see how effectively this controls heat.. but not odor (assuming the lights being used are sealed with glass).

My idea is to run a fresh air vent into the bottom of my sealed area. Then have one end left open on my hood with the other end ducted to a fan that exhausts through a scrubber to the roof vent. I'm thinking this will take care of both the heat and odor.

Any thoughts on this idea?

That should work fine...any air being expelled should be filtered and your set up will work...good luck...

Has neone set up an intake to a filter in there room to block spores in such to provide fresh air with there co2? my humidity is low and im adding some uvb supplement so i need to lower my temps 5 degrees

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Sub, I love this thread. Your ventilation system look lungs ready to breath. I am building my new garden and have been gathering some hard ducting, I will certainly come here with my questions. Awesome!! When i figure out how to +rep you will get it lol.

Greetings & Love in the name of the Most High. Thank you for all your knowledge. If i may I would like to pick your brain a lil bit for some advice on ventilation as I wanna do this right the first time around. I have two closets that are side by side and both are 66"L x 26"w x93"h and are divided by no more than a foot of wall between them. I will be pulling air from the right closet as its the one closet to the outside. I currently have the right as my veg and want to setup the left as my flowering chamber with my digital 600w air cooled 6" but was thinking of not using the glass to get a lil more light output- what do you think? So here are the things im stumped on: - I cut a 8" hole in the wall leading outside and put a booster fan thats then connected to an elbow and ducted straight up thats then elbowed and then shot accross into the other closet? Then how do I get the fresh air blown parallel to my canopy? Do i use a y duct after the booster and leave one end open and the other ducted up into the other room? And if so then how would i get the fresh air down to the canopy in the flowering chamber? Also how do I filter the air and bugs coming thru from the outside - do they make lil filters that you can just sleeve on to the booster fan? Also please keep in mind noise and smell are both an issue for me as I want this to be pretty stealthy as the left closet is right on the other side of the main hallway of the house. I am on a budget but at the same time am not willing to cut corners as I know cheap things end up costing you twice as much in the longrun. I can run the carbon filter up thru the attic as you do on yours but would prefer not to have to go up there if I dont nescessarilly have to as no ones been up there in years. If you could please point me in the right direction as how to set this up down to the last the very last detail and what type and size of fans I'll need it would be GREATLY APPRECIATED. I hope to hear from you soon - Thanks again you are an inspiration to all us younger jedis on here. NO STRESS JAH BLESS - IREY HEIGHTS