10x8 C.H.I. Model 3240 Door and 18x12 Sectional Door with LiftMaster Trolley Opener

Commercial sectional installation, trolley opener setup, limit adjustment, wall control and safety testing. Product/job: 10' x 8' C.H.I. Model 3240 sectional door and 18' x 12' sectional door with commercial LiftMaster trolley opener. Work includes measurement verification, hardware and operating-system checks, balance testing, and final inspection for smooth, safe door movement.