Does this fit on top of the cast iron vent? As an extra layer to also protect the iron vent from elements/rust?

No Don’t leave the cast iron vent outside It will rust

Will this fit Kamado Joe Classic 18"?

It should, I bought it for my Medium Egg. It fits perfectly. The inside diameter is 14.5. It is possible you may need to get the cover for the Large Egg. I think I bought it on amazon, but not sure. Just google your Egg size with the cover. if your not sure, the Big Green Egg website would have it and tell you the correct one to get.

What is the inside diameter ?

The inside diameter is 5 1/2 inches or more precise metric is 14.2 CM.

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Dracarys Grill Chimney Top Vent Cap Ceramic Damper Top Big Green Egg Accessories, Big Green Egg Parts Replacement for Medium,Large and XLarge Size Big Green Egg Green

Dracarys Grill Chimney Top Vent Cap Ceramic Damper Top Big Green Egg Accessories, Big Green Egg Parts Replacement for Medium,Large and XLarge Size Big Green Egg Green

Product ID: 709533556

Details

Brand
Dracarys
Handle Material
Stainless or
Included Components
Chimney Cap
Item Weight
1.27 Kilograms
Material
Ceramic

🔥High-temp resistant ceramic

🌧️Rainproof & rustproof glaze

🖐️Ergonomic anti-slip handle

Description

🔥 Elevate your grill game with the ultimate ceramic chimney cap!

WEATHERPROOF WONDER - Glazed finish seals out rain and prevents rust, keeping your grill pristine in any season.
ULTIMATE HEAT SHIELD - Crafted from premium ceramic to withstand intense grill flames without cracking or damage.
EFFORTLESS FIRE CONTROL - Ceramic damper top snuffs flames quickly and helps you manage grill temperature like a pro.
SAFE COMFORTABLE HANDLING - Anti-slip, ergonomic design allows one-handed use with ease—just remember your gloves at high temps!
PERFECT FIT FOR BIG GREEN EGG - Designed specifically for Medium, Large, and XLarge Big Green Egg models for seamless integration.

The Dracarys Ceramic Chimney Top Vent Cap is a durable, high-quality replacement part designed for Medium, Large, and XLarge Big Green Egg grills. Made from heat-resistant ceramic with a smooth, rainproof glaze, it protects your grill from the elements while providing precise temperature control. Its ergonomic, anti-slip handle ensures safe, easy use, making it an essential upgrade for serious grill masters.

Specifications

ASIN	B07DJCPJZX
Brand	Dracarys
Customer Reviews	4.8 out of 5 stars 405 Reviews
Enclosure Material	Ceramic
Global Trade Identification Number	06108778404892
Handle Material	Stainless Steel or Silicone
Included Components	Chimney Cap
Is Dishwasher Safe	Yes
Is the item dishwasher safe?	Yes
Item Weight	1.27 Kilograms
Manufacturer	Dracarys
Material	Ceramic
Number of Pieces	1
UPC	610877840489

Reviews

I**S

Speed of delivery

27.01.2026

K**S

Perfect chimney replacement cap for your Big Green Egg !

8.12.2025

S**Z

Great price & great quality !!!

9.07.2025

K**C

Hard to please

9.03.2026

D**N

Lasted 4 years with regular use before spider cracking

14.07.2025

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