{"product_id":"balance-spiral-unit-520-10-14kg-with-no-foot-tp-black","title":"BALANCE SPIRAL UNIT 520 10-14KG WITH NO FOOT TP Black – W615203017","description":"Heavy-duty balance spiral unit designed for single-hung or double-hung window applications. This 520-series mechanism supports sashes weighing 10–14 kg and is engineered without a foot attachment for streamlined installation in tight spaces or custom frame configurations.\u003cbr\u003e\u003cbr\u003eThe spiral balance system uses precision-wound springs to counterbalance window sash weight, reducing the effort required to open and close windows while maintaining smooth, controlled operation throughout the lift cycle. Constructed from durable materials with a matte black finish, this unit resists corrosion and blends discreetly into window frames.\u003cbr\u003e\u003cbr\u003eIdeal for renovation projects, new builds, or replacement installations where reliable sash support is essential. No-foot design allows flexible mounting on existing hardware or custom brackets. Fits standard window frame channels and compatible with common window hardware configurations.\u003cbr\u003e\u003cbr\u003eInstallation requires basic hand tools and fits most single or double-hung window frames. Ensure accurate weight calculation of your sash before purchase to confirm compatibility with the 10–14 kg load range. Check frame channel dimensions for fit.\u003cbr\u003e\u003cbr\u003eSold as a single unit. Pairs or multiples may be required depending on your window configuration—consult your window specification or hardware supplier if unsure of quantity needed.","brand":"Whitco","offers":[{"title":"Default Title","offer_id":54935829774549,"sku":"W615203017","price":32.28,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0601\/0968\/4949\/files\/PL-1380_Large_9dfd5f4e-4982-4fcb-aaca-c08988bba1ce.jpg?v=1791256046","url":"https:\/\/glideworks.com.au\/products\/balance-spiral-unit-520-10-14kg-with-no-foot-tp-black","provider":"Glideworks","version":"1.0","type":"link"}