White polycarbonate plastic, 13 1/2" in diameter. Supplied with thick gasket to accept either glass or plastic bell jars. A tubing adapter that accepts 1/4" i.d. vacuum tubing is located on the outside rim of the vacuum plate.
Additional ResourcesNo Additional Resources at the time.
Flinn Catalog/Reference Manual Page 264
Flinn Middle School Catalog/Reference Manual Page 207