Crack Bested From Inside | Window

| Type of Crack | Likely Origin | Inside or Outside? | Impact Point? | | :--- | :--- | :--- | :--- | | | Near frame edge | Inside (if warm inside) | No | | Impact (ball/elbow) | Center of glass | Inside | Yes (crater) | | Frame Pressure | Edge to edge | Inside (pressure from frame) | No | | Nickel Sulfide | Random center point | Inside (tempered glass) | No (butterfly shape) |

[Your Name/Position] Signature: ____________________ window cracked from inside

Based on the fracture pattern analysis, the failure is consistent with [Thermal Stress / Impact from Interior Object] , resulting in a fracture originating from the inner pane surface. | Type of Crack | Likely Origin | Inside or Outside