i'm using that zipper thing that zandor is talking about. an all i can say is that its a great investment. i just got it yesterday and applyed it to my mylar to make a door. WOW. now i can block all lights and air. great investment.

i got it in a website with good prices.

www.bghydro.com
YASoob Reviewed by YASoob on . Ventilation dilemma If I can't attach inflow fans and exhaust fans to the walls because of using a spare room in a rental property what are my alternatives to ensure temperature control, fresh air supply and removal of smell? Will supplementing with CO2 be enough with a fan to move the air around and a carbon filter/ozone for smell? Do I need to consider building a closet to fit in the room so I can attach the necessary fans, something I am reluctant to do? Alternatives please!! Rating: 5