GATT — General Agreement on Tariffs and Trade. A multilateral treaty whose purpose is to help reduce trade barriers between the signatory countries and to promote trade through tariff concessions.

GPX — Plastic coated plywood. ( Brand Name as produced by Georgia Pacific Plywood Corp.)

GST –– Goods and services taxes.

Gang Box — Nickname for a equipment box most contractors and some exhibitors carry that contains tools and supplies needed for the routine set up of trade show displays. See JOB BOX or TROUBLE BOX.

Gator Foam –– Laminated foam board used for signage, available in a variety of thicknesses. More rigid and durable than Foam Core.

Gauge — Where tariffs refer to gauge, they mean the U.S. Standard Gauge for determining thickness of sheet or plate steel; Browne & Sharpe Gauge for rod and sheets of aluminum, copper, brass and bronze; U.S. Steel Wire Gauge for iron, steel, and copper wire.

Gear Drive — Technique of transferring motion from motor shaft to object by use of one or more interlocking gears.

Gel — Theatrical color filter used in conjunction with theatrical projection fixtures and spotlights. Also referred to as GELATIN.

GEM –– (Greyhound Exhibit Module) Greyhound’s display units employing locking metal bars and flexible panels. SEE EXTRUDED ALUMINUM.

General Contractors SEE GENERAL SERVICE CONTRACTOR. Also OFFICIAL CONTRACTORS.

General Export Licenses? — Any of various export licenses covering export commodities for which VALIDATED EXPORT LICENSES are not required. No formal application or written authorization is needed to ship exports under a General Export License.

General Service Contractor — An organization that provides show management and exhibitors with a wide range of services, sometimes including, but not limited to, installation & dismantle (I&D), creating and hanging signage and banners, laying carpet, material handling , and providing booth furniture. ALSO KNOWN AS OFFICIAL CONTRACTOR. SOMETIMES REFERRED TO AS "DECORATOR".

Genie Lift –– The manufacturer of a variety of lifts used in the erection of trade show displays. The first model manufactured was a hand-cranked material handling lift .ALSO REFERRED TO AS A HURTY GURTY. Genie now also manufactures motorized lifts that can be used as material lifts or man lifts.

Gerber –– Machine for cutting vinyl lettering used in making signs.

Glass Plate — Sheets of glass commonly available in thicknesses of 1/8" 3/16" or 1/4".

Glass, Single Thick — One-eighth-inch-thick glass, such as is used for window panes.

Glass, Solar — Glass that has been treated to transmit light but reflect infrared solar rays.

Glass, Tempered — Hardened safety glass, usually plate.

Glass, Wire — Plate glass with embedded wire reinforcement.

Glossy — Common term for photographs reproduced on high gloss paper.

Glow Plug –– A lighted electric receptacle which glows when electricity is flowing through the line.

GOBO –– A special pattern made of metal or glass that can be installed into the aperture of a light source to project a pattern.

Good One Side — Grade of plywood whose face side is free of blemishes. SEE CDX.

Goose-necked light –– A small spot light with a flexible stem so that it can be pointed in the direction that light is most desired.

Graphics — Communicative elements—color, copy, art, photographs, translites, etc.—used to illustrate a booth theme or to enhance decor.

Greenfield –– Flexible metal conduit, used where code demands. Usually inter-changeable with MC cable, but does not come with wire installed in it. A/K/A FLEX

Grid System — Technique of providing system of structural supports, electrical conduit, etc., on a pattern of centers. Also used for ceilings.

Grievance — An employee's or an employer's dissatisfaction with some aspect of the employment relationship. May or may not be limited to dissatisfaction due to interpretation and application of the union contract.

Grommet — Rubber, metal or plastic element for reinforcing holes in weaker materials.

Gross Square Feet — Total space available in exhibit hall as compared to net square feet, which is usable exhibit space.

Gross Weight — The full weight of a shipment, including goods and packaging. Compare TARE WEIGHT.

Gusset — In construction, a triangular reinforcement or brace in corners of panels or framing.