Optical Filter Glass GG435 12.7mm diameter 3mm thick

Optical Filter Glass RG630mm 24.4 diameter 2.1mm thick

Optical Filter Glass BG23 8mm diameter 1.4mm thick

Optical Filter Glass GG455 24.4mm diameter 2mm thick

Edmunds Optics 1" Diameter, Optical Cast Plastic IR Longpass Filter

Optical Filter Glass RG610mm 24.4 diameter 3mm thick

Optical Filter Glass GG475mm 24.4 diameter 2.25mm thick

Optical Filter Glass OG570mm 24.4 diameter 2.3mm thick