{"product_id":"finish-1-fh-series-hardener","title":"Finish 1 FH Series Hardener","description":"\u003cdiv class=\"mb3\"\u003e\n\u003cdiv class=\"dangerous-html mb3\"\u003eFinish 1 FH611-4 is a fast universal hardener manufactured by Sherwin-Williams for use with primers, sealers, and 3.5 VOC acrylic enamel paints. It is formulated to accelerate drying times, particularly in cooler environments between 60F and 70F, helping ensure proper curing and finish quality. FH611-4 uses a standard 4:1 mix ratio and is compatible with Finish 1 FC720 overall clear coat, FC710 spot\/panel clear coat, and factory-packaged 3.5 VOC acrylic enamel colors. The hardener reaches full cure in approximately 24 hours and is suitable for use on metal, wood, and plastic surfaces. This part number refers to the 1-quart container size and is fully 3.5 VOC compliant.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mb3 f6 mid-gray lh-title overflow-visible db\"\u003e\n\u003cdiv class=\"dangerous-html mb3\"\u003e\n\u003cul\u003e\n\u003cli\u003eFH611-4 accelerates drying of primers, sealers, and 3.5 VOC acrylic enamel paints, especially effective in cooler temperatures between 60F and 70F.\u003c\/li\u003e\n\u003cli\u003eDesigned for a standard 4:1 mix with Finish 1 clear coats and enamels, including FC720 overall clear and FC710 spot\/panel clear.\u003c\/li\u003e\n\u003cli\u003eHelps ensure proper curing in cold conditions. Supports strong film build and consistent finish quality during painting and refinishing operations.\u003c\/li\u003e\n\u003cli\u003eMeets 3.5 VOC regulations for compliant use in automotive refinishing environments.\u003c\/li\u003e\n\u003cli\u003eFH611-4 refers to the 1-quart container suitable for metal, wood, and plastic refinishing applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"ACME","offers":[{"title":"Fast","offer_id":41291783602225,"sku":"853065","price":38.0,"currency_code":"USD","in_stock":true},{"title":"Medium","offer_id":41291783634993,"sku":"853063","price":38.0,"currency_code":"USD","in_stock":true},{"title":"Slow","offer_id":41291783667761,"sku":"853067","price":38.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0603\/4105\/9633\/files\/ACME_FH611.jpg?v=1792677779","url":"https:\/\/autopaintperformance.com\/products\/finish-1-fh-series-hardener","provider":"Auto Paint and Performance","version":"1.0","type":"link"}