When is the small missile impact test required?
Please refer to ASTM E 1886-04 and ASTM E 1996-04. For impact protective systems (shutters), the test is required if there are openings greater than 3/16 inch projected horizontally. For exterior opening systems (windows, doors, skylights), the test is required when the products will be installed greater than 30 feet above grade (Note: for exterior opening systems, the small missile test is not required if the exterior opening product has passed the large missile test).