50 pounds 

We can only process 1 box of clay per order for shipping in a USPS Large Flat Rate Box.  If you would like to purchase more than 1 box of clay to ship small package, please place multiple orders.

#20-G has the same properties as #20 with a fine grog added for slightly less shrinkage and improved work-ability.

Characteristics
Cone: 06 
Wet Color: Red 
Firing Color: Oxidation: Terra Cotta - Reduction: N/A 
Texture: Medium Coarse  
Avg. Shrinkage ±2%: 8.0% 
Avg. Water Absorption ±1%: 11.5%