As of my last knowledge update in October 2023, Armstrong does not manufacture the 918 ceiling tiles anymore. However, they do offer a wide range of other ceiling tile options that might serve as suitable alternatives. For the most current product availability, it's best to check directly with Armstrong or authorized distributors.
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Type your answer here... You first need to make an assumption that both the tiles are square and the ceiling is square, otherwise there are any number of possible answers. Each tile would therefore measure 2 ft x 2 ft. The ceiling would be 7 tiles x 7 tiles. The width of the ceiling would be 7 tiles x 2 feet = 14 feet.
2
12
36
Two tiles can only make one rectangle.