{"product_id":"4x4-screw-jack-post-14-5in-18-5in-adjustable-house-jacks-heavy-duty","title":"4x4 Screw Jack Post 14.5in-18.5in Adjustable House Jacks - Heavy Duty","description":"\u003cp\u003eIn this review of the 4x4 screw jack post set, the bottom line is straightforward: builders and DIYers who need temporary, adjustable support for joists, beams, and short-term shoring will appreciate the solid capacity and simple operation. The package reviewed includes two screw shore jacks and a metal handle, and the single biggest reason to buy is the high working load capacity paired with a compact footprint that fits 4x4 lumber. This is a practical tool for leveling floors, supporting beams during repairs, and stabilizing short posts in crawlspaces or basements.\u003c\/p\u003e\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePackage contents:\u003c\/strong\u003e Two screw shore jacks and an 11.8in metal handle provide everything needed to start shoring without buying extra tools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeight adjustment:\u003c\/strong\u003e The jack adjusts from 14.5in to 18.5in so it can cover a useful mid-range of lifts for flooring and foundation repair tasks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBase mounting options:\u003c\/strong\u003e A 3.5in x 6in base plate with four 0.5in and two 0.3in mounting holes offers flexible installation to secure the jack to a floor or footing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e4x4 compatibility:\u003c\/strong\u003e The jack is shaped to accept standard 4x4 posts directly, making installation quick when using common lumber sizes.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDurable construction:\u003c\/strong\u003e Made from alloy steel with a protective black coat, the jacks resist corrosion and stand up to repeated use on job sites.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh load capacity:\u003c\/strong\u003e Rated for up to 24,700 lbs, the jacks provide substantial temporary support for structural lifting and repairs.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWho It's For\u003c\/h2\u003e\n\u003cp\u003eThis product is aimed at contractors, tradespeople, and experienced DIY homeowners who need a reliable temporary support solution for leveling floors, supporting beams during replacement, or stabilizing short posts in basements and crawlspaces. The high load rating and compact base make it suited to renovation work where controlled adjustment and strong support are required.\u003c\/p\u003e\n\u003cp\u003eThose who should look elsewhere include users who need very long travel jacks, continuous permanent support systems, or jacks specifically sized for posts other than 4x4 without shimming. Also, anyone unfamiliar with safe shoring practices should consult a professional rather than rely solely on temporary screw jacks.\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\u003eHigh working load capacity gives confidence when lifting or supporting heavy timbers.\u003c\/li\u003e\n\u003cli\u003eSimple turn-handle adjustment with the included metal wrench speeds setup and changes in height.\u003c\/li\u003e\n\u003cli\u003eCompact design fits neatly under 4x4 lumber and the base plate offers versatile mounting options.\u003c\/li\u003e\n\u003cli\u003eDurable alloy steel construction with protective coating resists wear and corrosion.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eCons\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIntended for standard 4x4 posts; 3.5in x 3.5in posts will require shims for a stable fit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003ePackage\u003c\/td\u003e\n\u003ctd\u003e2 screw shore jacks + 11.8in metal handle\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHeight range\u003c\/td\u003e\n\u003ctd\u003e14.5in - 18.5in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBase plate size\u003c\/td\u003e\n\u003ctd\u003e3.5in x 6in\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting holes\u003c\/td\u003e\n\u003ctd\u003eFour 0.5in and two 0.3in holes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCompatible post\u003c\/td\u003e\n\u003ctd\u003eDesigned for 4x4 lumber\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaterial \/ finish\u003c\/td\u003e\n\u003ctd\u003eAlloy steel with black protective coat\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWorking load capacity\u003c\/td\u003e\n\u003ctd\u003eUp to 24,700 lbs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch2\u003eOur Verdict\u003c\/h2\u003e\n\u003cp\u003eThe 4x4 screw jack post set is a practical, heavy duty choice for anyone who needs temporary adjustable support for floor leveling, beam repair, or short-term shoring. With a high working load, straightforward height tuning using the included handle, and a compact base plate, it represents solid value for renovation work when used with proper shimming for nonstandard posts.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eCan these jacks be mounted to a floor?\u003c\/strong\u003e\u003cbr\u003eYes, the base plate includes multiple mounting holes so the jacks can be fastened to a suitable floor or footing for added stability.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWill a 3.5in x 3.5in post fit?\u003c\/strong\u003e\u003cbr\u003eA 3.5in x 3.5in post is smaller than a 4x4 and will need shims around all sides to ensure a stable seat in the jack.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAre these suitable for permanent support?\u003c\/strong\u003e\u003cbr\u003eThese jacks are intended for temporary shoring and adjustment during repair or construction, not as a permanent support solution.\u003c\/p\u003e","brand":"Lasnten","offers":[{"title":"Default Title","offer_id":48616172388571,"sku":"B0FDKHMYC9","price":79.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/1043\/1707\/files\/61aaCx1PnuL._AC_SL1500.jpg?v=1778525615","url":"https:\/\/gearmusthave.com\/products\/4x4-screw-jack-post-14-5in-18-5in-adjustable-house-jacks-heavy-duty","provider":"GearMustHave","version":"1.0","type":"link"}