filter options for light tight vent?

[Sean]

ok, i have a fan sucking air out of the darkroom, and today installed a light proof vent that allows air in from the outside.. I figured it would improve the airflow and add some fresh air. What can I do to keep dust from passing through the incoming vent without impeding the airflow too much? A lightweight filter of somekind taped over the vent? thanks

 

[Flotsam]

There are all sorts of large (20"x20", 25"x20") furnace air filters available at hardware and home stores . It would seem that one of these would be good for your application.

 

[BWGirl]

I would look for those filters they use in air purifiers, or even the ones they use in humidifiers. They are relatively inexpensive and allow air flow with much less pressure than a furnace filter. (air moves through them without force...or as much force)

 

[kwmullet]

does anyone place much stock in those electrostatic air filters that are essentially a metalic grid to which the dust is supposed to stick via satic electricity and periodically just be rinsed off?

 

[eheldreth]

If you check lowes or home depo they usualy have vent filters. They come 8 or so in a pack, cost about $2.00 and are sized for standard return vents. They can be a little small but I tape two together. They are very cheap and I havn't had any problems.

 

[Silverprinter]

I second the furnace filter idea - I use it and it works well. With respect to air filters, they work, more or less, but you need to look at the sources of dust and try to reduce them.

Good luck

 

[Sean]

thanks guys

kwmullet, my darkroom is a duststorm and I found one of these electrostatic filters on an auction site and won it yesterday. The one I got has 3 stages, a regular filter, the electrostatic tower, and a charcoal filter. I'll let you know if it works..

 

[glbeas]

Next you might want to find a slightly larger CFM fan to push air IN to the darkroom to create a positive pressure inside the room. Then the dust outside will stay outside unless you carry it in yourself. You would usually mount your filters on the intake of this fan.

 

[livemoa]

I have seen the air filter from a car used as an inlet filter for dust. Seemed to work well and was cheap.