Vertical-Mounted Masts

Specifications: Heavy Duty Non-Locking Masts

Model 6-25 7-30 7-42
Payload capacity 150lb/68kg 150lb/68kg 150lb/68kg
Extended height 25ft/7.6m 29ft 1"/8.9m 41ft 2"/12.5m
Nested height 5ft 10"/1.8m 6ft 8"/2m 7ft 1"/2.1m
Approx. weight 110lb/50kg 125lb/57kg 235lb/107kg
Number of sections 6 6 9
Tube diameter 6.75-3"/171-76mm 6.75-3"/171-76mm 9-3"/229-76mm
Collar type Non-Locking Non-Locking Non-Locking
Max. operating pressure 35 PSIG (2.4 bar) 35 PSIG (2.4 bar) 35 PSIG (2.4 bar)
Installation Dimensions "A" min. 49.69in/1261mm 61in/1549mm 55.13in/1400mm
Installation Dimensions "A" max. 57.88in/1470mm 68.75in/1746mm 68.88in/1750mm
Installation Dimensions "B" min. 35.5in/902mm 57.25in/1454mm 51.63in/1311mm
Installation Dimensions "B" max. 51.25in/1302mm 67.38in/1711mm 67.38in/1711mm
Installation Dimensions "C" 12.13in/308mm 12.13in/308mm 13.81in/351mm
Installation Dimensions "D" 8.25in/210mm 8.25in/210mm 9.75in/248mm
Installation Dimensions "E" Non-Rotating 6.5in/165mm 6.5in/165mm 8.44in/214mm
Installation Dimensions "E" Rotating 8.44in/214mm 8.44in/214mm 10.75in/273mm
Installation Dimensions "F" Non-Rotating 6in/152mm 6in/152mm 7.75in/197mm
Installation Dimensions "F" Rotating 7.75in/197mm 7.75in/197mm 8in/203mm
Installation Dimensions "G" 8.75in/222mm 8.75in/222mm 11in/279mm
Installation Dimensions "H" 15.73in/400mm 15.73in/400mm 17.74in/451mm


Model 8.5-48 8.5-52 9.5-56 9-58
Payload capacity 200lb/90kg 100lb/45kg 200lb/90kg 90lb/40kg
Extended height 48ft/ 52ft/15.8m 56ft 2"/17m 58ft/17.7m
Nested height 8ft 6"/2.6m 8ft 4"/2.5m 9ft 6"/2.9m 9ft/2.7m
Approx. weight 275lb/125kg 266lb/121kg 296lb/135kg 290lb/132kg
Number of sections 8 9 8 9
Tube diameter 9-3.75"/229-95mm 9-3"/229-76mm 9-3.75"/229-95mm 9-3"/229-76mm
Collar type Non-Locking Non-Locking Non-Locking Non-Locking
Max. operating pressure 35 PSIG (2.4 bar) 35 PSIG (2.4 bar) 35 PSIG (2.4 bar) 35 PSIG (2.4 bar)
Installation Dimensions "A" min. 73.75in/1873mm 69.75in/1772mm 85.75in/2178mm 77.75in/1975mm
Installation Dimensions "A" max. 87.25in/2216mm 83.25in/2115mm 99.25in/2521mm 91.25in/2318mm
Installation Dimensions "B" min. 70in/1778mm 66in/1676mm 82in/2083mm 74in/1880mm
Installation Dimensions "B" max. 87.75in/2178mm 81.75in/2076mm 97.75in/2483mm 89.75in/2280mm
Installation Dimensions "C" 13.81in/351mm 13.81in/351mm 13.81in/351mm 13.81in/351mm
Installation Dimensions "D" 9.75in/248mm 9.75in/248mm 9.75in/248mm 9.75in/248mm
Installation Dimensions "E" Non-Rotating 8.44in/214mm 8.44in/214mm 8.44in/214mm 8.44in/214mm
Installation Dimensions "E" Rotating 10.75in/273mm 10.75in/273mm 10.75in/273mm 10.75in/273mm
Installation Dimensions "F" Non-Rotating 7.75in/197mm 7.75in/197mm 7.75in/197mm 7.75in/197mm
Installation Dimensions "F" Rotating 8in/203mm 8in/203mm 8in/203mm 8in/203mm
Installation Dimensions "G" 11in/279mm 11in/279mm 11in/279mm 11in/279mm
Installation Dimensions "H" 17.74in/451mm 17.74in/451mm 17.74in/451mm 17.74in/451mm

Dimensions provided in catalog or on willburt.com are for reference only and are not intended for vehicle design purposes.
Specifications subject to change without notice.

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