Isolite XL1 Aluminum LED Exit Sign – Green – LPX Series – New Open Box. Up for sale is a Isolite XL1 extruded aluminum LED exit sign, model LPX-EM-G-U-WH-MTEBP-SD. This is a commercial-grade emergency exit sign built for reliable safety lighting in industrial and commercial environments. This unit is new open box, meaning it has not been used but the packaging has been opened. Model: XL1 / LPX-EM-G-U-WH-MTEBP-SD. Type: LED Exit Sign. Mounting: Universal Mount (MTEBP). Operation: Emergency Battery Backup (EM). Condition: New Open Box. Durable extruded aluminum construction. Battery backup for power outage operation. Self-diagnostic capability for maintenance. Universal mounting for flexible installation. Offices and retail spaces. Packaging may be opened or show shelf wear.