I didn't look at you fan very close. If it is more than 4" you can buy a reducer (Lowe's) for each side, or go with bigger flex vent. (All things considered, reducers would probably be the way to go.)

PC :smokin:
PharmaCan Reviewed by PharmaCan on . ok i think im on the right track with lightproofing now.... ok here are a few pics of the hopefully better light proofing job any suggestions will be appreciated...ok the first pic is a pvc tube used for vent and its sealed with electrical tape...the second is the fan with foam strips around it to seal out light... the 3rd it the foam stripping i used to light proof the edges where light was getting in on the door...4 is the second tube to vent i believe its from a vacum cleaner...and finnaly 5 is a fan im thinkin about making a hole for its a pretty Rating: 5