This carrier must always be used with the base – The First Years VIA I440 User Manual
Page 23

Section 7 - Installation and Use
1
2 -
Base installed with Lap and
Shoulder belt.
3-
Base installed with LATCH
connectors and LATCH Bars.
.
Base installed with Lap belt
CRS Installation Pictograms -7.6
22
This carrier must always
be used with the base.
This carrier must always
be used with the base.
This carrier must always
be used with the base.
This carrier must always
be used with the base.