Window Glass Design 5 Serial Number Jun 2026

| Segment | Meaning | Example | | :--- | :--- | :--- | | | Who made the glass (Cardinal, AGC, Vitro) | CARD (Cardinal Glass) | | Design Code | The "5" confirming the design standard | D5 | | Date Code | Year and week of manufacture | 2407 (7th week of 2024) | | Spacer Type & Width | Metal vs. warm-edge spacer; gap size in mm | 12A (12mm Argon gap) | | Coating Batch | Specific Low-E coating run | 366 (Low-E 366 coating) | | Unique Unit ID | Individual serial number for traceability | 1052 |

Design 5 did not exist. You likely have Design 3 or 4. In that case, you cannot order a Design 5 serial number replacement; you must upgrade the entire opening. window glass design 5 serial number

Most major glass manufacturers (e.g., Cardinal, Guardian) require the original serial number for warranty validation. If your seal fails and you cannot provide the "Design 5" serial number, your claim is automatically denied. | Segment | Meaning | Example | |

A typical serial number for a Design 5 window looks like this: CARD-D5-2407-12A-366-1052 In that case, you cannot order a Design

Leave the full etching in the comments below (or contact a certified IGU professional), and ensure you mention that it is a "window glass design 5 serial number" inquiry—the industry code that opens the right door.