3 IN - Adhesive Depth Marker - 6 Inch x 6 Inch with 4 Inch Lettering state_Maine no venting is necessary

no venting is necessary

They are rated at 300 pounds for safe use in commercial environments

This ceramic pool depth marker is printed with 8 FT and has a skid resistant surface

Avoid increasing hardness more than 30 ppm every couple hours

3 IN - Adhesive Depth Marker - 6 Inch x 6 Inch with 4 Inch Lettering state_Maine no venting is necessaryThis pool depth marker states 3 IN and is printed with 4 Inch letters and has an overall size of 6 x 6 inches. The Deck and Coping Vinyl Depth Markers are skid resistant and designed for above the water line and deck placement around your pools and decks. Numbers, letters, and images are available in 4 inch lettering to meet National and State Codes. The vinyl stick on Depth Markers eliminate messy stenciling. They are made of a durable commercial