Do the mantles still contain Thorium Dioxide? Does it say anything about heavy metals/radioactivity on the packaging?

Thorium Nitrate is what most mantles are dipped in newer ones use yttrium or cerium. When burned the first time the thorium is changed to thorium oxide, and this is what you see when you use your light. It has basically been converted from nylon webbing to ceramic. An inch away from a thorium mantle and you’re at background radiation so the radioactivity at the actual mantle is near negligible (still there but not harmful).

I have an old model 231 dual mantel colman lantern. On the lantern it recommend to use 21A mantels. Would these fit?

Yes, the #21 Sock style filament would be the replacement part needed for the Coleman Sock Tie-Style Mantle you mentioned.

How long does it burn?

The cloth of the mantle burns away very quickly leaving the ash which is what makes the light. The ash will last as long as it isn't disturbed, so with a little care it can provide light for many hours.

If I want the dark green color carrying case, is it available and can it be assured?

This is the wrong listing, but if you are referring to the green "lantern case," the color in the listing is generally random. If you are referring to the coleman fuel carrying case, it is only available from Japan Amazon and is green.

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Description

💡 Light up your nights with Coleman’s trusted glow!

PROUDLY AMERICAN - Crafted in the USA for trusted quality and performance.
OUTDOOR ESSENTIAL - Perfect for camping, hiking, and all your night adventures.
RELIABLE BRIGHTNESS - Durable mantles ensure consistent, brilliant fueled lighting.
EFFORTLESS REPLACEMENT - String-tie mantles swap in seconds—no tools needed.
UNIVERSAL COMPATIBILITY - Fits multiple Coleman lantern models for versatile use.

This 4-pack of Coleman string tie lantern mantles offers easy installation and reliable brightness, compatible with a wide range of Coleman fueled lanterns. Made in the USA, these mantles are a durable, essential replacement for outdoor enthusiasts seeking dependable lighting on every adventure.

Specifications

Brand	Coleman
Hand Orientation	Ambidextrous
Color	Multi
Material	Blend
Fishing Technique	Spinning, Casting
Model Name	3000004344
Product Dimensions	7.2"L x 4.7"W x 0.03"H
Manufacturer	Coleman
UPC	076501204629
Global Trade Identification Number	00076501204629
Size	One Size
Number of Items	1
Item Package Dimensions L x W x H	5.28 x 3.43 x 1.18 inches
Package Weight	0.01 Kilograms
Item Dimensions LxWxH	7.2 x 4.7 x 0.03 inches
Brand Name	Coleman
Suggested Users	unisex-adult
Part Number	3000004344
Style	Fishing,reel
Included Components	MANTLE SOCK TIE 4PK C050
Fishing Line Type	Monofilament

Reviews

S**E

Quality products

Work soooo much better than the off brands.

11.08.2025

M**Y

sturdy and functional bag

I bought this for my Coleman lantern. It is very functional and sturdy. Price was good. My husband was satisfied

23.07.2025

P**S

Camping

Nice and easy to put on

7.09.2025

D**H

Original Coleman Mantels Worth the Extra Few Cents

These are the OEM Coleman mantels. Great for the price. Avoid the knock-offs. These last a long time as long as you don't treat the lantern roughly.

15.07.2025

V**Y

Mantel

Works 💪 as they should

1.06.2025

J**.

Camping

Great product and fast delivery. He string ties are the best.

7.07.2025

K**0

perfect fit

This worked great for my Coleman lantern and for my Ozark Trail lantern. Be warned that they look really big before you use them, they shrink down once heated.

7.07.2025

J**B

Coleman latern mantles are great quality

The same ease of use and quality I've come to expect. I use these on my over 30-year-old Coleman dual-fuel lantern.

24.09.2025

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