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<http://schema.org/description>
"Heavy duty air controlled door closer is designed for use on out swinging wood or metal doors up to 1-3/8 in thick. Door closing speed is fully adjustable.\nBrand Name: National Hardware \nBrand Name: National Hardware \nFinish: Aluminum \nFinish: Aluminum \nMaterial: Aluminum/Steel \nMaterial: Aluminum/Steel \nMechanism: Air Controlled \nMechanism: Air Controlled \nProduct Type: Door Closer \nProduct Type: Door Closer \nPackaging Type: Carded \nPackaging Type: Carded \nAdjustable Closing Speed: Yes \nAdjustable Closing Speed: Yes \nDoor closing speed is fully adjustable \nExtended operating life as closer is permanently lubricated \nIncludes convenient hold-open washer \nMedium duty air controlled door closer is designed for use on out swinging wood or metal doors up to 1-3/8 in thick \nTwo hole end plug allows closing force to be regulated\n"
<https://factoryhardwarestore.com/products/national-hardware-aluminum-aluminum-steel-air-controlled-door-closer-1>