With innovative door closure solutions, LCN products are trusted to work seamlessly during critical moments. Regular Arm Adjustable 1-6 Adjustable 1-6 Door Closer w/TBSRT Thru Bolts 689 Aluminum Regular Arm Adjustable 1-6 Adjustable 1-6 Door Closer with TBSRT Thru Bolts 689 Aluminum Finish With our high standards of performance, customers have peace of mind knowing their facilities are protected. LCN products can be found in many high-traffic facilities such as schools, hospitals, government buildings, and correctional facilities.LCN has unmatched expertise to meet all safety and security challenges.