HVAC Filter Retaining Bar

Simple little model. My ceiling mounted 1" HVAC filters would slam against the inlet when the HVAC turned on. This was a bit annoying when sleeping. I designed this simple little model to magnetically mount to the inside of the filter housing. Use 10x3mm round magnets either through press fitting or for enhanced hold, a dab of super glue on the bottom. I used these magnets, but any 10x3mm magnet should work (though note there is some variation in magnet size) https://www.amazon.com/dp/B08GLS59JS?ref=ppx_yo2ov_dt_b_product_details&th=1