National Aluminum Heavy-Duty Pneumatic Screen Door Closer Easy Heat 42"-72" (107 cm-183 cm) and

42"-72" (107 cm-183 cm) and 60"-110" (152 cm-279cm)

Star Tron(TM)'s enzymes break down debris into sub-micron sized particles that can be easily burned during the combustion process

Environmentally safe and biodegradable

and the DIY green installation requires no nails or glue

Works above and below the ground

National Aluminum Heavy-Duty Pneumatic Screen Door Closer Easy Heat 42"-72" (107 cm-183 cm) andHeavy duty air controlled door closer is designed for use on out swinging wood or metal doors up to 1 3 8' thick. Door closing speed is fully adjustable. 2 hole end plug allows closing force to be regulated. Includes convenient,hold open, washer. Extended operating life as closer is permanently lubricated.