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3" Inside Diameter (ID) Rubber Grommets

(3 products)

3 sizesfrom $5.11ships from Elgin, SCbulk pricing from 50+

Every 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.

How to size a 3" ID grommet. 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.

Related sizes: 2" ID grommets · Grommets that fit 3" holes · All rubber grommets
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Applications

  • 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.

3" Inside Diameter (ID) Rubber Grommets: questions

How does bulk pricing work?
Bulk discounts apply automatically in the cart, per item: 50+ pieces save 10%, 500+ save 20%, 1,000+ save 30%, 2,500+ save 40% and 5,000+ save 50%. Each product page shows the price at every tier.
How fast do orders ship?
Orders usually ship within 24 hours of being placed, by UPS or FedEx with a tracking number, from our warehouse in Elgin, South Carolina. <a href="/pages/shipping-policy">Shipping policy</a>
Can I return parts I don't need?
Yes, within 30 days of delivery. Email us for an RMA number first; items must be in the condition received, with all parts and the original packaging. Refunds may carry a 15% restocking fee (exchanges do not), and the buyer pays return shipping unless the problem is our fault. <a href="/pages/return-policy">Return policy</a>

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🎉 App-only discount applied at checkout