Heavy Duty House Leveling Jacks - 4.5-6.5inch Height, Fits 4x4 Inch Posts | 10000lb Capacity,adjustable Crawl Space Leveling Jacks， crawlspace jacks for leveling permanent, Basement Floor Jack

PERFECT FIT FOR 4×4 INCH SQUARE POSTS: Designed for standard 4x4 inch square wooden posts. With 4.01IN×4.01IN internal dimension, it accommodates wood expansion from thermal changes and moisture. Unlike other brands house jacks for lifting and leveling (external 4IN×4IN design causing secondary wood processing), our jack post saves time and labor costs.

VERSATILE APPLICATION SCENARIOS. Ideal for crawlspace support, attic floor reinforcement, house beam stabilization, patio deck support, large equipment leveling, and stair platform reinforcement. Provides reliable screw jack stands for structural reinforcement needs in residential and commercial applications.

USER-FRIENDLY DESIGN FOR VARIOUS USERS. Jack support pole perfect for DIY enthusiasts, contractors, and renovation workers. Easy to use - install nail at bottom to prevent rotation.Adjust joist jack height by rotating handle even after base/top installation for unmatched convenience.

CONVENIENT 4.5-6.5INCH HEIGHT ADJUSTMENT. Offers jacks for house 4.7-6.5 inch adjustable height with easy threaded adjustment. Rotate the handle to adjust lally column precisely after fixing base and top. Note: Height refers to post top (not 4x4 base) - cut wooden posts considering 4x4 frame.

HIGH-QUALITY ASTM A570 GR.33 STEEL CONSTRUCTION: House lifting jacks crafted from premium ASTM A570 Gr.33 steel for excellent strength and durability. Prevents bending and deformation under heavy loads, addressing flimsy construction in some products.House floor jacks support tube diameter 1.5 inches * wall thickness 0.1 inches.