JVC DLA-SX21U Instructions Manual page 53

Dimensions (unit: mm)
Top
L
D
7
Front
89
Model Name
DLA-SX21U/E
DLA-SX21SU/SE
298 2
15
267
L D
8.2 92.5 38.2
11.0 79.2 41.0
Bottom
6M (Depth 10mm)
Attachment screw should be
more than 6mm but less than 10mm in length.
Side
B
A B
36.2
39.0
Specifications
181 20
A
67.5
Center of lens
292
53