{"product_id":"national-mfg-n178-822-silver-knob-latch-with-key","title":"National Mfg N178-822 Silver Knob Latch with Key","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe NATIONAL MFG\/SPECTRUM BRANDS HHI N178-822 is a silver knob latch with key designed for wood or metal screen and storm doors. It features a dual locking design with an exterior key lock that operates independently from the interior locking mechanism, providing enhanced security at the entry point. The zinc die cast spring-loaded strike plate is included, along with mounting screws finished to match the hardware. This unit is packaged in a quantity of 3 and weighs 2.75 pounds. Licensed locksmiths, carpenters, and general contractors typically install this type of door hardware during new construction or replacement service calls.\u003c\/p\u003e\n\u003cp\u003eThis latch is suited for residential screen and storm door applications on both wood and metal door frames. It accommodates hole spacing of 1-1\/2 inches, 1-3\/4 inches, or 3 inches, making it compatible with a wide range of standard door prep configurations. For wood doors, it fits door thicknesses from 5\/8 inches to 1-3\/8 inches. The separate interior locking mechanism adds a secondary layer of access control without requiring the exterior key, making it practical for back entries, porch enclosures, and secondary egress points where keyed security is preferred.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eDual locking design: exterior key lock operates separately from the interior locking mechanism\u003c\/li\u003e\n  \u003cli\u003eFits hole spacing of 1-1\/2 inches, 1-3\/4 inches, or 3 inches\u003c\/li\u003e\n  \u003cli\u003eCompatible with wood doors 5\/8 inches to 1-3\/8 inches thick\u003c\/li\u003e\n  \u003cli\u003eDesigned for wood or metal screen and storm doors\u003c\/li\u003e\n  \u003cli\u003eSpring-loaded strike plate manufactured from zinc die cast included\u003c\/li\u003e\n  \u003cli\u003eMounting screws included and finished to match product hardware\u003c\/li\u003e\n  \u003cli\u003eUses Y11 key blank N223-990 1308K for key replacement\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for wood or metal screen and storm doors with hole spacing of 1-1\/2 inches, 1-3\/4 inches, or 3 inches. Fits wood doors from 5\/8 inches to 1-3\/8 inches thick.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstall by a qualified carpenter, locksmith, or experienced DIYer following the door manufacturer guidelines. Power tools are not required, but a hand drill may be needed to adjust or clean out existing bore holes before fitting. Ensure the door is fully closed and stable before aligning the strike plate. Do not over-tighten mounting screws, as this may distort the latch mechanism alignment on thinner door panels.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 2.75 pounds\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHole Spacing\u003c\/strong\u003e: 1-1\/2 inches, 1-3\/4 inches, or 3 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompatible Door Thickness (Wood)\u003c\/strong\u003e: 5\/8 inches to 1-3\/8 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStrike Plate Material\u003c\/strong\u003e: Zinc Die Cast\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFinish\u003c\/strong\u003e: Silver\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eKey Blank\u003c\/strong\u003e: Y11 (N223-990 1308K)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Quantity\u003c\/strong\u003e: 3\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUnit of Measure\u003c\/strong\u003e: EA\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: NATIONAL MFG\/SPECTRUM BRANDS HHI\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: N178-822\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"NATIONAL HARDWARE","offers":[{"title":"Default Title","offer_id":51562602692914,"sku":"N178-822","price":86.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/91d134015d565947779e35bc7b8664ee.jpg?v=1786480587","url":"https:\/\/voomisupply.com\/products\/national-mfg-n178-822-silver-knob-latch-with-key","provider":"Voomi Supply","version":"1.0","type":"link"}