The LEE Filters 253 Hampshire Frost Filter (48″ x 25′ Roll on 1″ Core) is used over a light source to reduce its output and contrast in highlights in a scene. It is like a little frosty light with the LEE Filters 253 Hampshire Frost Filter (48″ x 25′ Roll on 1″ Core).Under 6774K Source C light, the 253 Hampshire Frost Filter provides less than a 0.25-stop value. It is constructed from polyester that is heat-resistant to 356F and is delivered as a 48″ x 25′ roll on a 1″ core.