4" Yellow MightyGlow with Luminescent Center Line - 100' Roll - Floor Tape & Safety Floor TapePatented Mighty Line Floor Tape & Safety Floor Tape 4 inch by 100 foot yellow with glow in the dark center line industrial floor marking tape. Mighty Line floor tapes come with a 3 year limited warranty. Mighty Line peel and stick floor tapes have beveled edges which improves durability in harsh industrial environments. Mighty Glow floor tapes are a great safety solution when the power goes out in the warehouse. This floor tape is also available in a