{"product_id":"boyisen-rv-slide-out-support-jacks-20-49-in-adjustable-5000-lb-capacity-galvanized-steel-drill-crank-adjustment","title":"BOYISEN RV Slide-Out Support Jacks 20–49 in Adjustable, 5000 lb Capacity — Galvanized Steel, Drill\/Crank Adjustment","description":"\u003cp\u003e\u003cstrong\u003eBOYISEN RV Slide Out Support Jacks are adjustable stabilizer stands that brace and steady slide-out compartments on campers and trailers, offering up to 5000 lb capacity per jack and a 20\"–49\" height range.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eWhen you park your motorhome or travel trailer, the extended slide-out can wobble, sag, or place extra stress on rails and seals. These BOYISEN slide-out supports provide a fast, tool-assisted way to add rigid backing under the slide assembly so the living space feels steadier and the hardware receives less long-term strain. They are built from galvanized steel for rust resistance and include both a hand crank and a drill-socket for quick height changes.\u003c\/p\u003e\n\n\u003ch3\u003eHow do these supports install and adjust?\u003c\/h3\u003e\n\u003cp\u003eInstallation is straightforward and designed for a single person. Set the U-shaped top under the slide frame, choose the hole position for coarse height, then fine-tune the threaded column using an electric drill or the included crank.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePlace U-top against slide-out frame for secure contact\u003c\/li\u003e\n  \u003cli\u003eSelect pin hole for initial 20\"–49\" extension\u003c\/li\u003e\n  \u003cli\u003eUse drill socket for rapid thread rotation or hand crank for controlled adjustments\u003c\/li\u003e\n  \u003cli\u003e5\" diameter base distributes load to resist sinking on soft ground\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat protection do these jacks offer to slide-out mechanisms?\u003c\/h3\u003e\n\u003cp\u003eThese supports reduce deflection and bending by transferring some of the slide-out load down to the ground rather than the slide rail itself. That lowers stress on seals and rollers, helping preserve alignment and operation over time.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003ePrevents excessive sagging of rails and frames\u003c\/li\u003e\n  \u003cli\u003eReduces vibration and side-to-side movement while parked\u003c\/li\u003e\n  \u003cli\u003eHelps maintain seal compression to limit water intrusion risk\u003c\/li\u003e\n  \u003cli\u003eGalvanized finish resists corrosion in outdoor environments\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre these jacks strong and safe to use?\u003c\/h3\u003e\n\u003cp\u003eEach jack has a rated capacity up to 5000 pounds and is constructed from heavy-gauge steel, but they are intended for stabilizing and supporting slide-outs, not lifting the entire RV. Use them as supplemental support while the RV is stationary and on level ground.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eHeavy-duty steel body with corrosion-resistant plating\u003c\/li\u003e\n  \u003cli\u003eRated load capacity provides robust support for most slide-outs\u003c\/li\u003e\n  \u003cli\u003eWide circular base improves footprint on various surfaces\u003c\/li\u003e\n  \u003cli\u003eIncludes safety note: not a primary lifting device for jacking the RV chassis\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for? BOYISEN slide-out support jacks suit RV owners who frequently use slide-outs and want a simple way to improve on-site stability and protect slide mechanisms. They are a good fit for campers, travel trailers, and motorhomes with accessible slide frames where added under-support will reduce shaking and long-term wear. The pair format covers two sides for many standard installations; consider additional supports for very large or unusually configured slides. If you need help choosing or fitting these supports, BOYISEN customer service is available to answer product-specific questions.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can I use these to lift my RV?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: No. These jacks are for stabilizing slide-outs only and are not intended to lift the RV chassis or replace a jack.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What tools are needed to adjust the height?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: You can use the included hand crank or an electric drill with the supplied socket for faster thread adjustments.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"BOYISEN","offers":[{"title":"Default Title","offer_id":55170958754135,"sku":"B0F93S1N4F","price":139.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1050\/1524\/7191\/files\/boyisen-front-view-pair.jpg?v=1790435556","url":"https:\/\/britishgarage.co.uk\/products\/boyisen-rv-slide-out-support-jacks-20-49-in-adjustable-5000-lb-capacity-galvanized-steel-drill-crank-adjustment","provider":"British Garage","version":"1.0","type":"link"}