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The GIBRALTAR MAS-0900 is a heavy-duty support screw jack designed for shoring, temporary support, and load-bearing applications in construction and structural work. It features an adjustable height range of 9 to 24 inches and a minimum rated capacity of 40,000 pounds, making it suitable for supporting beams, slabs, formwork, and other structural elements during construction or renovation. The base diameter measures 2.75 inches, and the unit weighs 10.6 pounds. Installation is handled by contractors, carpenters, and structural trades who need reliable, field-adjustable vertical support.
The MAS-0900 is used in residential and light commercial construction for temporary shoring of floor systems, beam placement, and formwork support. The adjustable screw mechanism allows height to be dialed in precisely within the 9 to 24 inch range, accommodating varying floor-to-beam clearances without the need for custom blocking. It is well suited for situations where load must be transferred safely to a floor or ground surface during framing, remodeling, or structural repair work.
Designed as a general-purpose support screw jack for use in construction shoring and temporary structural support applications where an adjustable support within a 9 to 24 inch height range is required.
Support screw jacks should be installed by qualified construction or carpentry trades familiar with temporary shoring practices and applicable building codes. Before installing, verify that the bearing surface can handle the intended load and that the jack is plumb and fully seated at both the base and head contact points. Never exceed the rated minimum capacity of 40,000 pounds. Inspect threads and the locking collar for damage before each use, and do not modify or weld the jack in the field.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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