Vent covers, configuration considerations
Vent covers are imporant to think through before purchasing. There are a surprisingly number of ways vent covers can be configured incorrectly. For starters, make certain you measure each duct opening carefully for each vent cover. Ideally a duct opening is exactly the right size. For example, a 4 by 10 opening should measure 4 by 10 inches. But what happens when the opening is 4.5 inches by 9.75 inches? Will vent covers fit? Well, much depends upon the style of vent covers you are interested in. Maybe the opening will work and maybe it won't. If it is too small perhaps it is possible to enlarge it just a bit to fit the vent covers. Often, openings that are too large will fit vent covers just fine. Same for small openings. Your best bet is simply to get on the phone and talk to a knowledable person.