Sentry The Guardimals Owner's Manual page 71

9.0 Vehicle Seat Belts
Combination Lap/Shoulder Belt With Retractor:
DO NOT use a vehicle lap/shoulder
belt system if the lap belt and shoulder
belt each have retractors at one end.
This type of vehicle seat belt system
will NOT adequately restrain the Car Seat.
Passive Restraint - Lap or Shoulder Belt Mounted
on Door:
DO NOT use a vehicle seat belt that is
connected to the vehicle door in any way.
These types of seat belts are designed
to automatically surround the occupant
when the door is closed. This type of
vehicle seat belt will NOT adequately
restrain the Car Seat.
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