Largest Dog Crate that'll fit in double cab?

Anyone know of a large crate that fits in the back of a double cab? We usually do a standard 36" crate, and it fits, but it has to be taken apart to get through the door and then put together when inside.

Anyone know of any other dog crate brands that might fit through the door? Another option I'm considering is a collapsable dog crate from Impact.

 

Does it have to be a crate? Will something like this work, or does that allow a little too much freedom?

$78 VEVOR XL Truck Dog Back Seat Extender for Dogs,Truck Dog Seat Cover Hard Bottom Support 400lbs,Dog Hammock for Truck,Hard Bottom Dog Seat Cover for Full Size F150/RAM1500/Silverado Crew Cab Pickup

https://www.amazon.com/dp/B0DN6378XW

 

I have a Medium sized Gunnar Kennel and it's a tight fit.

 

I haven't installed it yet, but this one is for when you put the back seats up.....

$60 Automiim Floor Dog Hammock for Truck with Flip Up Seats, Crossbar Design Dog Truck Seat Cover for Back Seat Crew Cab, XL Truck Dog Seat Cover Back Seat (Dog Leash Included)

Amazon.com: Automiim Floor Dog Hammock for Truck with Flip Up Seats, Crossbar Design Dog Truck Seat Cover for Back Seat Crew Cab, XL Truck Dog Seat Cover Back Seat (Dog Leash Included) : Pet Supplies