For more information on center LATCH, click here.There are 4 possible ways for the center seat to have Lower Anchors: There are a pair of lower anchors spaced exactly 11 inches apart (standard spacing) that are designated for the center seat. There are 4 lower anchors in the back seat and the vehicle manufacturer allows you to borrow the 2 innermost ones to install a car seat in the center - and the innermost ones are spaced exactly 11 inches apart (standard spacing) There are 4 lower anchors in the back seat and the vehicle manufacturer allows you to borrow the 2 innermost ones to install a car seat in the center - and the innermost ones are spaced wider than 11 inches apart (non-standard spacing). In these situations the car seat manufacturer must also approve of their car seat being installed with lower anchors that are at non-standard spacing. In this scenario you MUST have a car seat that approves of lower anchors that are at a wider spacing. Some vehicles add a 5th lower anchor to the center seat - which gets used along with one of the innermost lower anchors belonging to one of the side seats. This set up tends to be useless in most cases as the car seat will take up 2 seating positions and often won't install securely as it is straddling two vehicle seats and often trying to sit on top of seat belt hardware like a buckle.