{"product_id":"4x4-screw-jacks-2-pack-adjustable-jack-posts-heavy-duty-support","title":"4x4 Screw Jacks 2 Pack Adjustable Jack Posts - Heavy Duty Support","description":"\u003cp\u003eIn this review the reviewer looks at the 4x4 Screw Jacks 2 Pack and finds them best suited for DIYers and professionals who need robust, adjustable temporary or permanent support for lumber and structures. The single biggest reason to buy is the combination of a wide adjustable range and a very high load capacity, which makes these shore jacks reliable for basement, crawlspace, stairwell, shed, and construction uses where controlled lifting and leveling of 4x4 posts is needed.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit for 4x4 lumber:\u003c\/strong\u003e Designed to accept standard nominal 4x4 square lumber (3.5in sq) so you can use readily available posts for support.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide adjustable height:\u003c\/strong\u003e Adjustable height range lets users set support between about 13.2in and 18.7in, offering flexibility for different leveling and shoring tasks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh load capacity:\u003c\/strong\u003e Rated up to 24,000 lbs maximum load capacity, providing heavy duty support for demanding residential and commercial jobs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSecure base plate:\u003c\/strong\u003e The 3.5 x 6in base plate includes multiple mounting holes for fixing the jack to a floor or beam for stable, long-term installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwivel top for alignment:\u003c\/strong\u003e The M22 swivel bar lets you rotate and fine tune the top plate during installation to get the post aligned quickly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThe 4x4 Screw Jacks are aimed at homeowners tackling basement or crawlspace leveling, contractors doing temporary shore supports during repair work, and farmers or builders who need a portable heavy duty post support. They are especially useful when standard 4x4 lumber is part of the support system and a high load rating is required.\u003c\/p\u003e\n\u003cp\u003eThose who want a tool-free micro adjustment system and fast setup will appreciate these jacks, but if you need support for nonstandard beam sizes or require adjustable heights outside the 13.2in to 18.7in range you should look at alternative jacking systems designed for different lumber dimensions or greater extension.\u003c\/p\u003e\n\u003ch2\u003ePros \u0026amp; Cons\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003ePros\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSolid compatibility with standard 4x4 posts makes sourcing replacement lumber easy.\u003c\/li\u003e\n\u003cli\u003eGenerous load rating up to 24,000 lbs gives confidence for heavy structural support tasks.\u003c\/li\u003e\n\u003cli\u003eMultiple mounting holes on the base plate allow secure installation for semi-permanent use.\u003c\/li\u003e\n\u003cli\u003eSimple height adjustment and a swivel top speed installation and alignment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHeight adjustment limits mean it is not suitable when you need support shorter than about 13.2in or taller than about 18.7in.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eFit\u003c\/td\u003e\n\u003ctd\u003eStandard \/ nominal 4x4 lumber (3.5in sq)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAdjustable height range\u003c\/td\u003e\n\u003ctd\u003e13.2in - 18.7in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase plate size\u003c\/td\u003e\n\u003ctd\u003e4in x 4in x 0.28in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase plate mounting holes\u003c\/td\u003e\n\u003ctd\u003eFour 0.6in and two 0.3in holes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwivel bar (top)\u003c\/td\u003e\n\u003ctd\u003eM22, 12in height swivel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum load capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 24,000 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 4x4 Screw Jacks 2 Pack is a practical, heavy duty option for anyone who routinely works with 4x4 posts and needs dependable adjustable support. With a strong 24,000 lb capacity, secure base plate options, and a convenient swivel top, these jacks are good value for foundation, crawlspace, and temporary shoring tasks where the specified height range matches the job.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eWill these fit standard 4x4 lumber?\u003c\/strong\u003e\u003cbr\u003eYes. They are designed for nominal 4x4 square lumber measuring about 3.5in square.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan the base plate be mounted permanently?\u003c\/strong\u003e\u003cbr\u003eYes. The base plate includes multiple mounting holes to secure the jack to a floor or beam, though mounting hardware is not included.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much weight can each jack hold?\u003c\/strong\u003e\u003cbr\u003eEach jack is rated with a maximum capacity up to 24,000 lbs for heavy duty support applications.\u003c\/p\u003e","brand":"NAXVIO","offers":[{"title":"Default Title","offer_id":48676037853403,"sku":"B0F48MKKH9","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/511T-KNSxuL._AC_SL1500.jpg?v=1778623459","url":"https:\/\/gearmusthave.com\/products\/4x4-screw-jacks-2-pack-adjustable-jack-posts-heavy-duty-support","provider":"GearMustHave","version":"1.0","type":"link"}