An empty-looking space is not always usable. Hinges, latches, service covers, moving seats, and the path used by your hand all reduce the real footprint.
1. Choose a stationary zone
Start low and away from the driver. Prefer an enclosed trunk floor, a closed storage compartment, or a deep fixed cubby when the product description permits it.
2. Measure the clear box
Record usable width, depth, and height at the narrowest points. Add the working clearance stated on the product page.
3. Trace the removal path
Make sure the item can be lifted, unfolded, emptied, or removed without forcing it around trim or hardware.
4. Mark moving parts
Open and close lids, move only the seats allowed by the vehicle manual, and preserve access to latches, emergency equipment, service panels, and cargo covers.
5. Draw the exclusion map
Exclude airbags, belts, buckles, child-seat anchors, rails, pedals, controls, cameras, sensors, windows, mirrors, and every driver sight line. If the boundary is not clear, do not place the product there.