Folding Floor Signs. Bright yellow plastic wet floor warning signs can be read from 30 ft. away. Two-sided 25" signs are ideal for doorways and narrow spaces. Fold flat for storage or transport on carts. Carrying handle. Open, 25" high; closed, 11w x 1-1/2d x 26-1/2h. Caution. Multilingual -- English, Spanish, French and German.