Originally posted by dz8
Yes, the ones with 1’’ filter are common. I’ve seen it in Home Depot and Lowe’s. It is usually used when there is only one return opening in the system.
In my very limited survey, I haven’t seen it in the homes with multiple return openings in my area. I’ve thought about it for a long time that why it isn’t used all over the house for all the return openings. I also asked many people about that. I guess the reason could be that 1’’ filter is usually used to handle the whole air flow for the unit. In the homes with multiple return openings, each opening only handles a fraction of the entire air flow and do not need the filters of 1’’ thick. Also, the return grill with 1’’ filter itself is at least 1’’ thick. It is difficult to install. It also looks bulky.
I am trying to come up something “flat” over the return opening (so it just as easy to install – a few screws as the traditional grill without a filter) and have the traditional plain look of a common gill without a filter.
I appreciate your thoughts very much and love our discussion.
1" or greater return grille tilt out ,no screws involved,it's that simple.
It just varies around the country with what's common in one area versus another.