Hitachi HDT725025VLA380 - Deskstar 0A33423 T7K500 250GB SATA 7200RPM 8MB Cache Hard Drive Specifications page 71

All dimensions in the above figure are in millimeters.
The breather hole must be kept uncovered in order to keep the air pressure inside of the disk enclosure equal to
external air pressure.
The following table lists the dimensions of the drive.
Table 42: Physical dimensions and weight
Height [mm]
Width [mm]
Length [mm]
Weight [grams - maximum]
26.1 Max
101.6±0.25
147.0 Max
640
Deskstar T7K500 Hard Disk Drive Specification
57