XTRALIS 6MM MICROBORE TUBE, UL LISTED AND LABELED FOR PLENUM USE, MEETS NFPA 72 SAMPLING TUBE LABELING REQUIREMENTS: “ASPIRATED SAMPLING TUBING FOR FIRE DETECTION USE – DO NOT DISTURB OR PAINT,” EACH ROLL IS INDIVIDUALLY SERIALIZED FOR EASE OF IDENTIFICATION AND HAVE FOOTAGE MARKERS EVERY 3 FEET FOR EASE OF MEASUREMENT. XTRALIS MICROBORE TUBING HAS BEEN TESTED FOR SMOKE TRANSMISSION, DO NOT SUBSTITUTE. SOLD 330 FT ROLL, PRICE SHOWN IS PER ROLL.