{"title":"3\" Inside Diameter (ID) Rubber Grommets","description":"\u003cp\u003eEvery grommet on this page has a 3\" inside diameter (ID), the clear opening left for whatever passes through it. A 3\" opening is used for dryer and vent hoses, 2-1\/2\" pipe, and large cable runs through truck boxes, cabinets and equipment housings. The 3 styles here fit panel holes of 3-1\/4\" or 3-1\/2\", with groove widths of 1\/8\", 3\/16\" and 1\/4\", so you can match both the hole you drilled and the thickness of the material.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow to size a 3\" ID grommet.\u003c\/strong\u003e Start with the item going through: measure its outside diameter, or the widest point of any plug or fitting that has to pass, and make sure it clears 3\". Next, measure the hole with calipers; the grommet should be listed as fitting that exact hole size, because the groove has to sit tight against the edge. Last, measure the panel thickness and choose a groove width equal to it or slightly wider. If the panel is thicker than the widest groove listed, drill to a larger hole size instead and step up in ID. Searching by hole size rather than opening? Use the \"fits holes\" link below.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRelated sizes:\u003c\/strong\u003e \u003ca href=\"\/collections\/2-inside-diameter-rubber-grommets\"\u003e2\" ID grommets\u003c\/a\u003e · \u003ca href=\"\/collections\/3-groove-diameter-rubber-grommets-fits-3-holes\"\u003eGrommets that fit 3\" holes\u003c\/a\u003e · \u003ca href=\"\/collections\/rubber-grommets\"\u003eAll rubber grommets\u003c\/a\u003e\u003c\/p\u003e","products":[{"product_id":"3-inside-diameter-rubber-grommet-fits-3-1-2-panel-holes-1-4-gw","title":"3\" Rubber Grommet, 3\" ID for 3-1\/2\" Hole – 1\/4\" Groove Width, 4\" OD – Large Wire, Hose \u0026 Cable Grommet","description":"\u003ch2\u003eProduct Overview:\u003c\/h2\u003e\n\u003cp\u003e3\" Inside Diameter Rubber Grommet - 1\/4\" Groove Width - Fits 3-1\/2\" Holes. Ideal for passing wires through panels without risking damage or abrasion by acting as a protective barrier, extending the lifespan of your cables and wires.\u003c\/p\u003e\n\u003ch3\u003eProduct Specifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInside Diameter: 3\"\u003c\/li\u003e\n\u003cli\u003eGroove Width: 1\/4\"\u003c\/li\u003e\n\u003cli\u003eGroove Diameter: 3-1\/2\"\u003c\/li\u003e\n\u003cli\u003eOutside Diameter: 4\"\u003c\/li\u003e\n\u003cli\u003eThickness: 11\/16\"\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Rubberfeetwarehouse","offers":[{"title":"Default Title","offer_id":43207983694,"sku":"RG33331219","price":5.11,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0661\/8741\/products\/Rubber_Grommet_RG33121116.jpg?v=1738362037"},{"product_id":"3-inside-diameter-rubber-grommet-3-16-groove-width-fits-3-1-2-holes","title":"3\" Inside Diameter Rubber Grommet - 3\/16\" Groove Width - Fits 3-1\/2\" Holes","description":"\u003ch2\u003eProduct Overview:\u003c\/h2\u003e\n\u003cp\u003e3\" Inside Diameter Rubber Grommet - 3\/16\" Groove Width - Fits 3-1\/2\" Holes. Ideal for passing wires through panels without risking damage or abrasion by acting as a protective barrier, extending the lifespan of your cables and wires.\u003c\/p\u003e\n\u003ch3\u003eProduct Specifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInside Diameter: 3\"\u003c\/li\u003e\n\u003cli\u003eGroove Width: 3\/16\"\u003c\/li\u003e\n\u003cli\u003eGroove Diameter: 3-1\/2\"\u003c\/li\u003e\n\u003cli\u003eOutside Diameter: 4\"\u003c\/li\u003e\n\u003cli\u003eThickness: 5\/8\"\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Rubberfeetwarehouse","offers":[{"title":"Default Title","offer_id":13979131904109,"sku":"RG34331215","price":6.35,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0661\/8741\/products\/20190105_120158_1546707978086.jpg?v=1738361990"},{"product_id":"3-inside-diameter-rubber-grommet-1-8-groove-width-fits-3-1-4-holes","title":"3\" Inside Diameter Rubber Grommet - 1\/8\" Groove Width - Fits 3-1\/4\" Holes","description":"\u003ch2\u003eProduct Overview:\u003c\/h2\u003e\n\u003cp\u003e3\" Inside Diameter Rubber Grommet - 1\/8\" Groove Width - Fits 3-1\/4\" Holes. Ideal for passing wires through panels without risking damage or abrasion by acting as a protective barrier, extending the lifespan of your cables and wires.\u003c\/p\u003e\n\u003ch3\u003eProduct Specifications:\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eInside Diameter: 3\"\u003c\/li\u003e\n\u003cli\u003eGroove Width: 1\/8\"\u003c\/li\u003e\n\u003cli\u003eGroove Diameter: 3-1\/4\"\u003c\/li\u003e\n\u003cli\u003eOutside Diameter: 3-5\/8\"\u003c\/li\u003e\n\u003cli\u003eThickness: 3\/8\"\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Rubberfeetwarehouse","offers":[{"title":"Default Title","offer_id":13979134492781,"sku":"RG33331447","price":5.47,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0661\/8741\/products\/20190105_120727_1546708266354.jpg?v=1738361989"}],"url":"https:\/\/www.rubberfeetwarehouse.com\/collections\/3-inside-diameter-rubber-grommets.oembed","provider":"Rubberfeetwarehouse","version":"1.0","type":"link"}