National White Heavy-Duty Pneumatic Screen Door Closer Plateau Spax PowerLags Screws have a

Spax PowerLags Screws have a washer head with T-Star Drive and HCR (High Corrosion Resistant) exterior coating

Nickel-plated key blank

The optimal level of vapor permeability - to promote drying in wall systems and help prevent rot and mold

Cast-iron wheels have exceptionally long wear life and can withstand temperature extremes

National White Heavy-Duty Pneumatic Screen Door Closer Plateau Spax PowerLags Screws have aHeavy 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.