SPECIFICATIONS FHA PIPE FLASHING #RJ2FHA 26 Gauge Galvanized Steel • For 2 inch exhaust pipes 2 3⁄8 in. 6 cm HEIGHT 2 in. 5.08 cm 19 in. 48.26 cm 16 in. 40.64 cm 7 ½ in. 19.05 cm 6 in. 6 in. 15.24 cm 15.24 cm 6 in. 15.