3” Deep Rectangle Block Mold

These rectangle block molds are 3” deep. They come in three sizes:  8” x 6” 11” x 8”  14" x 10" Volume: 8” x 6” : 78 oz / 2306 ml 11” x 8” : 146 oz / 4317 ml 14" x 10" : 232 oz / 6861 ml Bottom surface area: 8” x 6” : 48 in^2 / 310 cm^2 11” x 8” : 88 in^2 / 568 cm^2 14" x 10" : 140 in^2 / 903 cm^2 Mold covers are sold separately.  All molds are made with high quality platinum cure silicone that is suitable for casting resin or concrete. Molds with this material are made to last, however, molds will degrade over time/usage. There are many factors that determine how fast a mold degrades. Here are several things to take into consideration: - Heat wears molds out. Using a torch on molds will damage them. Please stay away from using heat on molds! - Slow curing resins place greater stress on molds. - Mold releases extend a mold's life. - Pouring thicker than the resin's recommended depth may damage molds due to heat from the exothermic reaction. - Bubbles formed on the surface