Sift through large volumes of potential evidence while eliminating unimportant debris with our newly redesigned Sifting Screens. These screens presort physical evidence to size, while allowing small, insignificant particles to remain at the scene. Made from heavy-duty 18 gauge cold-rolled steel with black wrinkle-finish paint, the redesigned screen now features a base screen with a single insert. Rotating the insert in 90 degree increments creates three opening sizes from 1/8 up to 1/4. Two thumbscrews hold the insert in place and when the insert is removed, the base screen with 3/8 openings may be used. Overall size of the base screen is 18 x 18 and the insert measures 17 x 17.