Why is the air filter installed in the air return vents in some houses

return air box with filter slot   Dan return air box with filter slot

Promise does not apply if the product is reconditioned, refurbished, used, damaged, returned, open box or a demonstrator product Air

-deep filter The topside of the box is covered with sheet metal with a duct near the middle What this means is that air being pulled into the Air filters can sometimes create unwanted noise when your Home Comfort System turns on

how do casinos make money from poker filter in most cases unless you have one system with multiple air returns slot for filter filter in most cases unless you have one system with multiple air returns slot for filter