{"product_id":"grant-high-level-internal-adjustable-extension-275-450","title":"Grant High Level Internal Adjustable Extension 275–450","description":"\u003ch3\u003eGrant High Level Internal Adjustable Extension 275–450\u003c\/h3\u003e\n\nThe Grant High Level Internal Adjustable Extension 275–450 is designed to provide additional flexibility when installing compatible Grant internal flue systems. With an adjustable length of 275-450mm, it allows installers to fine-tune the flue run where a fixed-length extension may not provide the exact fit required.\n\nThe Grant White System Adjustable Extension 275-450mm 12-26kW is supplied with an extension and locking band and is primarily designed for use with compatible boilers up to 26kW. The adjustable design makes it a practical choice for high-level internal flue installations where precise positioning is important.\n\n\u003ch3\u003eAdjustable Extension for Flexible Installation\u003c\/h3\u003e\n\nWith a length that can be adjusted between 275mm and 450mm, this extension can help accommodate different installation requirements without having to rely solely on fixed-length components. The included locking band helps secure the extension once the desired length has been established.\n\n\u003ch3\u003eAvailable Adjustment Variants\u003c\/h3\u003e\n\nThe available range includes two adjustment options: 50-90mm and 90-200mm. These adjustment ranges provide additional flexibility when selecting compatible components for different installation configurations.\n\nFor the 275-450mm extension itself, the product is primarily intended for compatible Grant boilers with outputs of up to 26kW.\n\n\u003ch3\u003eGrant White System Compatibility\u003c\/h3\u003e\n\nThe extension forms part of the Grant White System and is designed for compatible internal flue arrangements. It provides installers with a convenient way to achieve the required flue length while maintaining a secure connection through the supplied locking band.\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eAdjustable extension length of 275-450mm\u003c\/li\u003e \u003cli\u003eDesigned primarily for compatible boilers up to 26kW\u003c\/li\u003e \u003cli\u003eSupplied with a locking band\u003c\/li\u003e \u003cli\u003eGrant White System component\u003c\/li\u003e \u003cli\u003eProvides flexibility when a fixed-length extension is unsuitable\u003c\/li\u003e \u003cli\u003eAvailable adjustment variants of 50-90mm and 90-200mm\u003c\/li\u003e \u003cli\u003eDesigned for straightforward internal flue installation\u003c\/li\u003e \u003cli\u003eAllows the flue length to be adjusted to suit the installation\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e \u003ch4\u003eWhat is the adjustment range of the Grant High Level Internal Adjustable Extension?\u003c\/h4\u003e\n\nThe extension itself can be adjusted between 275mm and 450mm, allowing installers to fine-tune the overall flue length during installation.\n\n\u003ch4\u003eWhich boilers is the 275-450mm extension designed for?\u003c\/h4\u003e\n\nThe Grant White System Adjustable Extension 275-450mm 12-26kW is primarily designed for use with compatible Grant boilers with outputs of up to 26kW.\n\n\u003ch4\u003eWhat adjustment variants are available?\u003c\/h4\u003e\n\nThe listed range includes 50-90mm and 90-200mm adjustment variants. These provide additional flexibility for selecting compatible components according to the requirements of the particular flue installation.","brand":"Grant","offers":[{"title":"50–90","offer_id":55210052714838,"sku":"182426","price":167.09,"currency_code":"GBP","in_stock":true},{"title":"90-200","offer_id":55210052747606,"sku":"182429","price":187.49,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0905\/4509\/4998\/files\/grant-high-level-internal-adjustable-extension-275-450-2008934.jpg?v=1788771625","url":"https:\/\/jjbuildingmaterials.co.uk\/products\/grant-high-level-internal-adjustable-extension-275-450","provider":"JJ Building Materials","version":"1.0","type":"link"}