Haha, so 3.8 feet and 3 foot 8 inches are somewhat different! I measured my door for 3.8 feet which is 45.6. The door I actually ordered was 3 foot 8 inches, which is 44 inches!
Thankfully, I had not yet figured out what I was doing for trim, so just adding 1 inch (3/4 actual) trim on either...