Orton Vent Master Kiln Vent Wood Modeling Tools Each box contains two individually

Each box contains two individually bagged 10 kilogram pugged blocks

It's able to vent two kilns simultaneously inf necessary with the addition of an Expansion Kit

This switch is referred to as a 3 heat or 4 position switch

As with any form of alumina

Orton Vent Master Kiln Vent Wood Modeling Tools Each box contains two individuallyOrton received the original patent in 1988 for Downdraft venting of Electric Kilns. Today they offer the most advanced Vent Master venting system that is easy to install, prevents fumes from entering the workspace, makes sure there is enough oxygen in the kiln for colors to fully develop, improves the temperature uniformity inside the kiln and helps increase the life of the heating elements. The Vent Master motor can be mounted on the floor or wall.