We just had a new HVAC system installed and all of our vents and the cold air return are in the ceiling. We searched for a while to find grilles that we liked but now there is one catch. the cold air return with the filter doesn't have latches for changing the filter. It will have to be unscrewed every time we need to change the filter. this seems totally unsustainable so i'm checking in to see if anyone knows of a solution. i read on another site someone had suggested using magnets to hold it up but i'm not totally clear on how that could be done. any help is much appreciated. thanks