Graco GMAX II 3900 ProContractor Series Gas Airless Sprayer (Hi-Boy)

The GMAX II 3900 ProContractor Series Gas Airless Sprayer is designed for professional contractors who need power and efficiency on every job. Delivering 65% more performance than the GMAX 3400, this sprayer produces up to 1.25 gallons per minute and supports two guns for maximum productivity. Its Endurance Vortex MaxLife Piston Pump uses breakthrough rotating rod technology to extend pump life and lasts six times longer between repacks. Maintenance is quick with the QuikPak Cartridge System, and the ProConnect 2 Pump Replacement System allows pump swaps in under a minute without tools, reducing costly downtime. The innovative QuikReel Hose Management System makes deploying and rewinding up to 300 feet of hose fast and tangle-free, so you can work smarter and finish more jobs. SmartControl 3.0 ensures consistent pressure and a uniform spray pattern, while the WatchDog Pump Protection System prevents damage when material runs low. Built for rugged conditions, the crushproof inlet strainer, heavy-duty prime valve, and durable cart design provide reliability on any jobsite. Paired with the Contractor PC Spray Gun for all-day comfort and control, the GMAX II 3900 ProContractor Series delivers the ultimate combination of speed, durability, and precision for high-volume projects.

• Gas-powered airless sprayer designed for professional contractors
• Sprays up to 1.25 gallons per minute for high productivity
• Endurance Vortex MaxLife Pump lasts six times longer between repacks
• Quick pump swaps with ProConnect 2 system minimize downtime
• QuikReel system enables fast hose deployment and storage
• SmartControl 3.0 ensures consistent pressure and spray pattern
• WatchDog system protects pump when material runs low
• Crushproof inlet strainer and heavy-duty prime valve enhance durability
• Rugged cart design with LED display improves usability
• Contractor PC Spray Gun offers comfort and control for extended use