{"product_id":"genie-39027r-garage-door-chain-extension-kit-8-ft","title":"Genie 39027R Garage Door Chain Extension Kit 8 Ft","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GENIE 39027R is a chain extension kit designed to extend the drive chain on residential garage door openers for use with 8-foot doors. Standard garage door openers are typically configured for 7-foot doors. When a residential door height is 8 feet, the drive chain requires additional length to complete the full travel cycle without binding or losing tension. This kit provides the hardware needed to make that adjustment, restoring proper chain slack and tension for reliable opener operation. Installation is straightforward and is typically performed by a garage door technician or a qualified installer familiar with chain-drive opener systems.\u003c\/p\u003e\n\u003cp\u003eThis extension kit is intended for residential applications where an 8-foot garage door is paired with a chain-drive opener that was not factory-configured for the extra door height. Common scenarios include new construction with taller rough openings, garage conversions, or door replacements that increase the door height beyond the standard 7-foot configuration. The kit ships as a single unit and includes the hardware needed to complete the chain extension on compatible GENIE chain-drive openers.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eExtends drive chain length to accommodate 8-foot residential garage doors\u003c\/li\u003e\n  \u003cli\u003eGalvanized finish for corrosion resistance in garage environments\u003c\/li\u003e\n  \u003cli\u003eGray color finish for a clean, low-profile appearance\u003c\/li\u003e\n  \u003cli\u003ePackaged as a single kit with all required extension hardware\u003c\/li\u003e\n  \u003cli\u003eUNSPSC Code 31162800 for procurement and inventory classification\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned as an OEM-style chain extension kit for GENIE chain-drive garage door openers installed on 8-foot residential doors.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a qualified garage door technician or experienced installer. Disconnect power to the garage door opener before beginning any work on the drive chain or rail assembly. After extending the chain, verify proper chain slack per the opener manufacturer guidelines before restoring power and testing operation. Do not operate the opener if the chain is improperly tensioned, as this can damage the drive mechanism or create a safety hazard.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: 8-foot residential garage door\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHardware Type\u003c\/strong\u003e: Chain Extension Kit\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Galvanized\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eColor\u003c\/strong\u003e: Gray\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLength\u003c\/strong\u003e: 38.25 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWidth\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHeight\u003c\/strong\u003e: 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 3.3 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 1\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUNSPSC Code\u003c\/strong\u003e: 31162800\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStandard Information\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: GENIE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 39027R\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GENIE","offers":[{"title":"Default Title","offer_id":51542326346034,"sku":"39027R","price":102.09,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/ed4cc0ddf72604fff9fb35c07da483f0.jpg?v=1785898232","url":"https:\/\/voomisupply.com\/products\/genie-39027r-garage-door-chain-extension-kit-8-ft","provider":"Voomi Supply","version":"1.0","type":"link"}