{"product_id":"greenlee-745h-3-1-2-knockout-punch-unit-4-011-in-round","title":"Greenlee 745H-3-1\/2 Knockout Punch Unit 4.011 in Round","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\n\u003cp\u003eThe GREENLEE 745H-3-1\/2 is a round knockout punch unit designed for cutting clean, precise conduit holes in electrical enclosures, panels, and junction boxes. It produces a 4.011-inch diameter hole at 3.5 inches in depth and is rated for a maximum of 10 gauge mild steel. Compatible with battery-operated and hydraulic knockout drivers, this unit gives electricians a fast, burr-free hole without drilling or grinding. The kit includes the die, draw stud, punch, and sleeve, so the installer has everything needed to complete the knockout in a single operation.\u003c\/p\u003e\n\u003cp\u003eThis knockout punch unit is suited for commercial and industrial electrical installations where large-diameter conduit entries are required. Typical applications include cutting 3.5-inch trade-size conduit knockouts in steel enclosures, switchgear panels, and distribution boxes. The battery and hydraulic operating compatibility makes it a practical choice on job sites where both driver types are in use. Licensed electricians and electrical contractors are the primary installers of this unit.\u003c\/p\u003e\n\u003ch4\u003eKey Features\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003eProduces a 4.011-inch (102.70 mm) round knockout hole\u003c\/li\u003e\n  \u003cli\u003eRated for 10 gauge maximum capacity in mild steel\u003c\/li\u003e\n  \u003cli\u003eCompatible with battery-operated and hydraulic knockout drivers\u003c\/li\u003e\n  \u003cli\u003e3.5-inch hole length for deep-reach knockout applications\u003c\/li\u003e\n  \u003cli\u003eSteel punch construction for durability under repeated use\u003c\/li\u003e\n  \u003cli\u003eIncludes die, draw stud, punch, and sleeve — complete unit, no additional components required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCompatibility\u003c\/h4\u003e\n\u003cp\u003eDesigned for use with GREENLEE battery-operated and hydraulic knockout driver systems. Refer to the driver manufacturer specifications to confirm stud thread and driver capacity compatibility before use.\u003c\/p\u003e\n\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\n\u003cp\u003eInstallation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize and lock out the enclosure or panel before beginning any knockout work. Ensure the draw stud is fully seated and the die is properly aligned before applying hydraulic or battery drive force. Do not exceed the rated 10 gauge mild steel capacity, as overloading the punch can damage the tooling or cause unsafe conditions.\u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePunch Shape\u003c\/strong\u003e: Round\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePunch Type\u003c\/strong\u003e: Knockout\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eOperating Method\u003c\/strong\u003e: Battery, Hydraulic\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePunch Hole Diameter\u003c\/strong\u003e: 4.011 inches (102.70 mm)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePunch Hole Length\u003c\/strong\u003e: 3.5 inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMaximum Capacity\u003c\/strong\u003e: 10 gauge mild steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePunch Material\u003c\/strong\u003e: Steel\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIncludes\u003c\/strong\u003e: Die, Draw Stud, Punch, Sleeve\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePackage Dimensions\u003c\/strong\u003e: 9 inches L x 7 inches W x 5 inches H\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 6.06 pounds\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: GREENLEE\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: 745H-3-1\/2\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"GREENLEE","offers":[{"title":"Default Title","offer_id":51539457048882,"sku":"745H-3-1\/2","price":1128.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/c529b034922e9b7e04fe4e9292ba5d90.jpg?v=1785840659","url":"https:\/\/voomisupply.com\/products\/greenlee-745h-3-1-2-knockout-punch-unit-4-011-in-round","provider":"Voomi Supply","version":"1.0","type":"link"}