A grille or grill (French word from Latin craticula, small grill) is an opening of several slits side-by-side in a wall, metal sheet or another barrier, usually to allow air or water to enter and/or leave and prevent larger objects (such as animals) from going in or out.
Register vs. grille
A register differs from a grille in that a damper is included. However, in practice, the terms "grille", "register", and "return" are often used interchangeably, and care must be taken to determine the meaning of the term used.
- "Grille, Grill, n." def. 1.a. Oxford English Dictionary Second Edition on CD-ROM (v. 4.0) © Oxford University Press 2009
- Chisholm, Hugh, ed. (1911). Encyclopædia Britannica. 12 (11th ed.). Cambridge University Press. p. 596..
- Sugarman 2005, p. 132.
- Haines & Wilson 2003, p. 129.
- Dearborn Home Inspection 2003, p. 80.
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