Wright Products standard-duty white pneumatic (air pressure) door closer is designed for out-swinging light-to-medium weight metal, wood, or vinyl screen and storm doors. The door closer measures 12-5/8 in. long (unextended) and 1-1/4 in. in diamete. Use alone for light and medium weight doors or in pairs for heavier full-view storm doors. Wright Products has been supplying quality screen and storm door hardware for over 60 years.