Ace Self Closing Residential Hinge Satin Brass Full Mortise 1/4 Radius Adjustable Closing Speed For 50lb Door Use 1 Hinge, 70lb=2 Hinges, 90lb=3 Hinges Ul Listed For Fire Doors Clamshell Discovery Acc, Nbr, Sup, Hwu 4 References National# 185-207 All items sold new in original packaging