The CH900X Series LED edge-lit exit is City of Chicago approved and offered in surface or recessed mount configurations. The CH900X is available as AC-only or self-powered models featuring a Lithium Ion class battery that operates for a minimum of 90 minutes during a power outage. The recessed fixture is constructed with an extruded aluminum trim plate with a 20-gauge steel housing. The surface mount version utilizes an extruded aluminum housing and includes a steel canopy. Both versions are UL 924 compliant and come standard with a single-face, acrylic EXIT panel. A full range of alternative, field-installable, single- or double-face acrylic panels are available as accessories.