: In North American master specifications (CSI MasterFormat), Section 23 23 00 covers Refrigerant Piping . A "piece" in this context refers to specialized hardware like refrigerant split patterns or factory-coated fabrication parts.
: This represents the 24-hour clock format used globally to avoid the "AM/PM" confusion common in the 12-hour system.
: "23-00" is used as a model series for items like the Studio Linen 2-Piece Sectional Go to product viewer dialog for this item. ⏰ Time of Day Context Terminology : 23:00 is exactly 11:00 PM .