3300F Insulating Firebrick KALA 10lbs ea heavy HIGH DUTY 9x 4.5x 3-2.75" ARCH

For those who REALLY push their forge COMPACT + DURABLE
Iya Knows Best
(10102)
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US $10.87
ApproximatelyS$ 14.01
Was US $14.49 (25% off)What does this price mean?
Recent sales price provided by the seller
Condition:
New
Sale ends in: 1d 22h
37 available13 sold
People want this. 22 people are watching this.
This one's trending. 13 have already sold.
Shipping:
US $15.49 (approx S$ 19.96) Standard Shipping.
Located in: Hesperia, California, United States
Delivery:
Estimated between Sat, 27 Sep and Tue, 30 Sep to 94104
Delivery time is estimated using our proprietary method which is based on the buyer's proximity to the item location, the shipping service selected, the seller's shipping history, and other factors. Delivery times may vary, especially during peak periods.
Ships today if you order in the next 12 hrs 5 mins
Returns:
30 days return. Buyer pays for return shipping. If you use an eBay shipping label, it will be deducted from your refund amount.
Coverage:
Read item description or contact seller for details. See all detailsSee all details on coverage
(Not eligible for eBay purchase protection programmes)
Seller assumes all responsibility for this listing.
eBay item number:193783463111
Last updated on Sep 13, 2025 03:24:00 SGTView all revisionsView all revisions

Item specifics

Condition
New: A brand-new, unused, unopened, undamaged item. See the seller's listing for full details. See all condition definitionsopens in a new window or tab
Super High Temp Furnace Brick
3300F Insulating Firebrick
International Buyers
Feel free to ask for a quote
This listing Sold as Individual Bricks
Happy to Custom Quote Orders
9" x 4.5" x 3" to 2.75
No. 1 Arch Firebrick
Custom Bundle
No
MPN
Does Not Apply
INTERNATIONAL Buyers - Please request quote
Shipped USPS Flate Rate Box
For the HOTTEST applications
Or those requiring DURABLE firebricks
Super HARD Firebrick
50% Alumina Class
At 10.8 lbs each:
Flat Rate shipping is best option
Super heavy duty Metal Smelter
Iron and Steel melting
NOT soft or porous
Super HARD and Super HEAVY Duty
High purity Alumina content
50% Alumina withstands super high heat 3300F
shipping weight EACH, best for Flat Rate Shipping
Happy to use your personal shipping labels.
Incinerators
Rotary Kiln Systems
Unit Quantity
1
50% Alumina refractory firebrick
Low porosity HARD fire brick
Although usual application is industrial
YOU choose how to use at home or in shop
Use for floor of traditional home forge
HARD brick will take a beating
Heavy and Non Porous
10.25 lbs per brick approximately
HEAVY and STURDY
SUPER HIGH TEMP
Carbon Baking Flues
Glass Tank Regenerators
High Temp insulating firebrick
3300F insulating fire bricks
California Prop 65 Warning
WARNING PROP 65: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Avoid breathing fiber particulates and dust. SAFETY INSTRUCTIONS FOR PERSONAL PROTECTION MAY INCLUDE: WEAR SAFETY MASK | WEAR SAFETY GLASSES | WEAR SAFETY GLOVES.
Brand
Harbison Walker International
Hot Blast Stove
Blast Furnace
Firebricks Made in USA
Packed and Shipped by US Veteran Business
Air Dry Wet Mortar Available 3000F
Ceramic Fiber Blankets also available
Country/Region of Manufacture
United States
Used primarily in Industrial Application
Find your own home shop application
Made in the USA
USA Veteran Seller
UPC
Does not apply
Category

Item description from the seller

About this seller

Iya Knows Best

100% positive feedback•65K items sold

Joined Jul 2010
Usually responds within 24 hours
Learning heat containment and thermal nuclear dynamics while serving in the Marine Corps, I had the opportunity to work with many products and study their properties, as well as their effectiveness. I ...
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Detailed Seller Ratings

Average for the last 12 months
Accurate description
5.0
Reasonable shipping cost
4.9
Shipping speed
5.0
Communication
5.0

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Seller feedback (9,385)

All ratings
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Negative
  • e***a (248)- Feedback left by buyer.
    Past year
    Verified purchase
    Came in great and heavy founding made easy
    Reply from: iyaknowsbest- Feedback replied by seller iyaknowsbest.- Feedback replied by seller iyaknowsbest.
    This heavy duty insulating firebrick is a hidden gem on eBay for all super high temp applications! Thanks for the super positive review, upload a picture or two if you get a chance! We truly appreciate you and your business!
  • j***c (572)- Feedback left by buyer.
    More than a year ago
    Verified purchase
    Very happy with fire bricks. Exactly what I wanted too. They came VERY WELL packaged for whats "normal" today for USPS. No cracks or any issues. I understand the not being able to pick these up due to Covid. But in the future I have both my injections and carry proof of it to ease others suspicions. Thanks again... Gary Parsons
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