Much like the Plug Lockout, the Plug Lockout Box and Pneumatic Lockouts prevent electrical plugs from being inserted into a wall outlet. The Plug Lockout Boxes are made of durable polypropylene ensuring strength and resistance to any tampering. The Pneumatic Lockouts are made from Stainless Steel, making them strong, durable, and resistant to corrosion. Accumax Global offer the small and large Plug Lockout Boxes along with the small and large Pneumatic Lockout Boxes. Also available is the Pneumatic Lockout, which provides multiple sized holes for different sized hoses.