The canister clock is a complete clock assembly which is usually back-lighted. Canister style clocks are available in flush mounted, semi-flush mounted, or surface mounted clock styles from 24 inches to 108 inches in diameter.
Semi-flush front lighted clocks are usually mounted an exterior wall surface. This design of clock is lighted by a neon ring or LED lighting located at the front edge of the clock behind a decorative bezel ring.
Bracket clocks extend out from a wall surface in corner and wall mounted configurations. Bracket clocks are especially suited to urban streetscapes. A bracket clock can provide signage and visual impact of a clock.