Please note: All interim revisions for this edition available at time of your purchase will be included.
This is the First Edition of the Joint UL/ULC Standard for Suspended Ceiling Grid Low Voltage Systems and Equipment, UL 2577/ULC-S2577. There are national differences only where standards (U.S. vs. Canadian) are referenced. However, the body of the standard is technically identical for Canada and the U.S.
