Liberty Max Duty Door Closer Parts are engineered for the most demanding and abusive commercial environments. The Max Duty closer is Liberty’s extreme heavy-duty model, designed for doors that experience constant force, high cycle counts, and continuous daily use.

These OEM replacement components maintain the closer’s original strength, hydraulic performance, and durability. Ideal for high-abuse openings such as schools, industrial facilities, storefront entrances, warehouses, and high-traffic commercial environments.

Common Replacement Components

• Max Duty arms (regular, parallel, top jamb)
• Hydraulic replacement parts
• Valve and adjustment components
• Mounting brackets, covers, and hardware

Browse genuine Liberty Max Duty replacement parts to restore factory-grade performance on severe-use commercial doors.