Hall - General term used for an exposition facility or the exhibit area within a facility.

Hand Truck - Small hand-propelled vehicle used for transporting small loads.

Hard Card - (1) Work order for labor or services. (2) Drayage contractor's record of materials received or shipped.

Hard Wire - Any electrical connection other than receptacle to receptacle.

Hardwall - A type of exhibit construction in which walls are made of a solid material, rather than fabric.

Header - A sign or other structure across the top of an exhibit.

High Jacker - Equipment used to lift people to a given height.

Hire - International term referring to "rent" a service or product.

Hold Harmless Clause - A contract clause that relieves one party of responsibility in the event of a legal claim.