These door shoes are ideal in any situation where airflow under the door are necessary, but privacy and light leakage are also a concern. Door shoes feature a durable aluminum channel and removable Eco-V vinyl insert combination. Insert can be easily replaced if necessary. Tested and approved under UL10C for fire; ASTM 283 for air flow and ASTM E90 and BS EN ISO 140-3: 1995 for sound control. This item is specially designed for hospitality.