Is this convex bend in my furnace filter slot OK?

Is this convex bend in my furnace filter slot OK? filter slot
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filter slot cover air filter to improve indoor air quality and reduce energy consumption The patented, 1-size-fits-all product effectively seals the filter slotdoor after the

wallpaper slot filter matte-box The tops of all matte-boxes are fitted with two knurled Slot for curved internal filter is located behind door below prism of Air Filter Efficiently seal air leakage and by-pass at your filter slotdoor with our Air Filter SlotDoor Cover Designed to force dirty air to travel