tumble dryer vent/grill query

[seneca]

Hi,
just made a hole for the tubmle dryer vent to go through and was wondering what should be put on the end, facing outwards. According to the bloke in b&q, I need a cowl, but without the back draft flap - flyscreens will fill up with fluff, and any flap will stop the hot any from venting properly. They didn't have any left! Can anyone confirm this, and maybe recommend something - preferably online so I can order it. Oh yes, and if possible, in brown.

thanks.

 

[kirkgas]

you will get something from BES online, delivered in a couple of days.
i would suggest using one with a back draught flap, if you dont have it you need to make sure tumble drier door is shut or you will get a cold blast in the kitchen

 

[seneca]

will the backdraft flap affect the airflow outwards? Not sure how powerful the pressure of the air is, but will it be enough to push the large single flap up?

 

[kirkgas]

i dont have any prob using the one i have