Britax B-SAFE 35 Manual page 23

How do you determine when a B-Safe 35 & B-Safe 35 Elite expires –
can no longer to be used?
In the user guide of each car seat in
the WARNING section you will find
this statement.
The number of years will vary
depending on model.
Refer to serial number / manufacture
date label on seat to calculate the
expiration date.
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