ProMaster 40.5mm Digital HGX Protection Filter #6353 - Gene's Camera Store
B + W B + W 40.5Mm Uv Protection Filter (010) For Camera Lens - Standard Mount (F-Pro), Mrc, 16 Layers Multi-Resistant Coating, Photography Filter, 40.5 Mm, Clear Protector Camera_Lens_Filte - Walmart.com
NiSi 40.5mm UHC UV Protection Filter with 18 Multi-Layer Coatings UHD | Ultra Hard Coating | Nano Coating | Scratch Resistant Ultra-Slim UV Filter | NiSi Optics USA