The Universal Hardware Heavy Duty Commercial Door Closer regulate the traffic in and out of your space and automatically close door after every opening. It controls the closing and latching of doors to eliminate slamming and add security and safety. The adjustable spring tension powers this closer from a Size 1 to a Size 5 (which allows for power adjustment for light to very heavy applications).
Universal Hardware UH4031 & UH4032 Regular Mount Closer Installation Instructions
Universal Hardware UH4031 & UH4032 Top Jamb Closer Installation Instructions
Universal Hardware UH4031 & UH4032 Parallel Mount Closer Installation Instructions