For mounting to Roof Racks / Load Bars / Roof Platforms WITH T-Slot Attachment - Spacing between your two Roof Rack T-Slots needs to be:
- 80L Rooftop Crate: 950mm (min) - 1240mm (max)
- 125L Rooftop Crate: 965mm (min) - 1240 (max)

For mounting to Roof Racks / Load Bars WITHOUT T-Slot Attachment (utilising supplied generic brackets to clamp around roof racks) - Spacing between your two Roof Rack bars (centre to centre) needs to be:
- 80L Rooftop Crate: 1050mm (min) - 1130mm (max)
- 125L Rooftop Crate: 1070mm (min) - 1140 (max)

For mounting to Roof Platforms with a raised outer rail (e.g. Front Runner Slimline II) - Spacing between your outer rails needs to be:
- 80L Rooftop Crate: 1390mm (min)
- 125L Rooftop Crate: 1420 (min)