If the Load Leg is used and/or base is installed with rigid UAS (LATCH):
Overhang is permitted provided rigid UAS (LATCH) and/or the Load Leg is in use. There is, however, not any set limit on the amount of overhang that is allowed.
Please contact firstname.lastname@example.org to provide pictures of the base, along with the make/model/year of your vehicle, if you are concerned with the amount of overhang.
If the Load Leg is NOT used and base is installed with a vehicle seat belt:
AT LEAST 80% of the Liing base must be supported by the vehicle seat. If it is not possible to achieve at least 80% support, then we recommend using the Load Leg, switching to a seating position with more depth, or changing to a rigid UAS (LATCH) installation, if possible.