Cable Tray Firestop Apparatus

An apparatus for firestopping a cable tray having a cable load and extending through a partition, comprising:

• a. a housing having top, bottom, side panels and central, longitudinal axis, and constructed to envelope a portion of the cable tray within the partition and defining an axial passageway between open front and back sides through which the cable tray and cable load extend;
• b. fixed firestop material arranged along the inside of said bottom and side panels and around said axial passageway;
• c. movable firestop material arranged proximate said top panel and around said axial passageway;
• and,
• d. an actuator connected to top panel and connected to said movable firestop material at opposed ends to suspend said movable firestop material within the housing above the bottom panel;
• wherein said actuator is operable from either the front or back side of the housing, and is constructed and arranged to change the suspension of said movable firestop material and move said movable firestop material between a first position disengaged from the cable load, which allows the cable load to be altered without interference from said movable firestop material, and a second position engaged with the cable load, which firestops the passageway surrounding the cable load.