The ability to fit a queen-size mattress inside the box of a pickup truck depends on the specific dimensions of both the mattress and the truck's bed.
A standard queen-size mattress typically measures 60 inches wide and 80 inches long (152 cm x 203 cm). Pickup truck beds, however, can vary in size. The most common bed length for a full-size pickup truck is around 6.5 to 8 feet (78 to 96 inches).
If the truck bed is long enough to accommodate the length of the mattress, the next consideration is the width. Most full-size truck beds are wider than 60 inches, so a queen-size mattress should fit widthwise without any issues.
However, it's essential to consider the depth or height of the truck bed. If the bed is too shallow, it may not be able to contain the height of the mattress, causing it to stick out or prevent the tailgate from closing securely.
To determine whether a queen-size mattress will fit inside a specific pickup truck, you'll need to measure the interior dimensions of the truck bed and compare them to the dimensions of the mattress. Keep in mind that some truck beds have features like wheel wells or extended cab compartments that can affect available space.
If you have the specific measurements for both the mattress and the truck bed, I can help you determine if the mattress will fit.