New York Pool Rules Sign for Supervision Level IV 36 x 24 Inches on Heavy Duty Aluminum (Customize or Leave Blank) color_Pewter Gray and White The Traveler features a stabilizer The Traveler features a stabilizer bar that improves stability during transfer The Backstroke Device has a versatile design which allows the device to attach to nearly any starting block with either straps or anchors The New York Pool Rules Sign for Supervision Level IV pools has been designed in accordance with the New York Title 10 Part 6 and is printed on heavy duty aluminum material Lettering height on sign is 1 inch and meets specific state code