Simplex Grinnell 4905-9937 742-295 Surface Mount Red Adapter Skirt [New]

Overall Dimensions (Imperial): 5 3/8?Ç¥ H x 5 1/4?Ç¥ W x 1 5/8?Ç¥ D. Total depth with horn = 3 1/8?Ç¥ (79 mm). Overall Dimensions (Metric): 136 mm x 133 mm x 41 mm. . . Simplex 4905-9937 Surface Mount Red Adapter Skirt is used with Simplex Horns to cover 1 1/2" deep surface mounted boxes.. Simplex Grinnell. TE Connectivity. 4905-9937.