Heavy-Duty All-in-One Aluminum Commercial Door CloserThe Universal Hardware Heavy Duty Aluminum Commercial Door Closer is suitable for aluminum, wood and hollow metal storefront applications. The closer features adjustable latching and closing speeds and a 180 opening range. Meets ANSI Grade 1 standards and ADA requirements. California residents see Prop 65 WARNINGS For interior commercial doors For aluminum, wood and hollow metal storefront applications Aluminum construction Includes back check control