Resources
Vehicle verification & measurements
We keep measurements on file for most truck makes and models. Depending on your make, model, bed length, and generation, we may already have what we need. If we do not, we will ask you for a few quick measurements. This guide covers what to measure and how, for both camper platforms.
Why this matters: every camper is fitted to your exact truck bed. If your truck is not already in our fitment database, we will need these numbers from you before your build can start.
How precise do these need to be? Not down to the millimeter, but close. Small errors are the difference between a camper that seats properly on the bulkhead, bed rails, and tailgate and clears the top of your cab, and one that does not. When in doubt, measure twice and round to the nearest 1/4 inch.
Frontier & Summit
Both models share the same bed-mounted fitment, so one set of measurements covers either camper. Match each letter below to the diagram.
- A
Interior bed length, from the top edge of the front bulkhead to the top edge of the tailgate
- B
Interior width between the bed rails at the front, cab side
- C
Interior width between the bed rails at the rear, tailgate side
- D
Width of the front bed rail at its narrowest point
- E
Width of the bulkhead, measured at the narrowest point if it tapers
- F
Width of the tailgate at its narrowest point, usually near the bed sides on contoured tailgates
- G
Height from the top of the bulkhead to the highest point on the cab, including antennas. Remove screw-in antennas first for an accurate number.
- H
Width of the rear bed rail at its narrowest point
Apex
The Apex sits inside the bed rather than clamping to the rails, so it needs wheel well and bed floor dimensions the pop-ups do not. Match each letter below to the diagram.
- A
Height from the bulkhead to the top of the cab, including antennas or anything else mounted on the roof
- B
Length between the wheel well and the closed tailgate
- C
Inner bed length, from the bulkhead to the closed tailgate
- D
Height from the bed floor to the top of the bed rails
- E
Edge-to-edge outside width across the bed rails
- F
Width between the wheel wells
- G
Bed width at the tailgate opening
Not sure how to take one?
Send us photos of your truck bed and we will walk you through it. Call or text (425) 908-0259, or email sales@cascadiaoverland.com.