RB-40 Firebricks - Box of 6
- Out of stock
RB-40 fireclay refractory bricks are dense, durable firebricks for building and repairing high-temperature masonry. They are used in fireplaces, wood stoves, pizza ovens, fire pits, kilns, furnaces, and other heat-exposed brickwork.
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Quick specs
- Material type: fireclay refractory brick
- Package size: box of 6 bricks
- Brick size: 9 in x 4.5 in x 1.25 in
- Temperature rating: up to 3000°F
- Best for: refractory masonry, oven and fireplace repair, firebox lining, kiln and furnace work
How to choose it
- Choose RB-40 when you need a solid fireclay brick for direct heat areas.
- Use MORTACLAY-40d or another suitable refractory mortar when setting the bricks.
- Measure your layout before ordering. Coverage depends on brick orientation, joints, and cuts.
Shipping note
Firebricks are heavy and shipping cost can vary by destination. Use the cart shipping preview before checkout. For larger quantities or orders over 700 lb, please review our Shipping & Bulk Orders page or contact us before placing the order.
FAQ
How many bricks are in one box?
One box includes 6 RB-40 fireclay refractory bricks.
Can these be used inside a fireplace or oven?
Yes, they are made for high-temperature refractory masonry applications.
Which mortar should I use?
For firebrick installation, MORTACLAY-40d is the main dry mortar option in this store.
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RB-40 Firebricks - Box of 6
