The 20CGA-280 is a Longpass Filter from MKS/Newport, a renowned vendor in the optical industry. This filter, with a catalog number of 20CGA-280, is available for purchase directly from the vendor's website, as indicated by its valid 'in stock' status link.
The filter is of the type 'Filter' and sub-type 'Longpass Filter', designed with a base shape of 'Rectangular'. It is made from a material identified as 'uvfs mal- 1965'. The filter's primary wavelength is 588nm.
In terms of its physical dimensions, the filter measures 50.8 x 50.8mm in width and height, with a thickness of 0.96mm. The 'cut on' wavelength is 280nm, and there is no specified 'cut off' wavelength.
The filter's coating is consistent on both the front and back, with a coating type listed as 'new 20cga-280'. The shape of the filter is 'Thin Lens'.