National Aluminum Hydraulic Screen Door Closer Screens & Screen Patches May be used indoors and

May be used indoors and is easy on beneficial insects

Advanced Polymar To Repel Water & Stains

Battery run time (alkaline batteries incl

knurled knob allows easy tightening

National Aluminum Hydraulic Screen Door Closer Screens & Screen Patches May be used indoors andSturdy built. Delivers smooth no bounce door closing action for wood or metal storm, jalousie or light interior door. Oil filled. Closer speed easily adjusted by rotating closer cylinder. Extreme temperature changes do not effect closer action. Polished aluminum tube, equipped with controlled power which allows selection of extra closing power at latching point.