Object Problems with colliders?

hi, i am making a game similar to mario. im trying to make it that when a hit a block with my head an object comes out(already done). but my problem is is that the position of the block is

x- 1.888497

y- 21.99268

z- -3.456086

but when i try to walk under the block it won't let me(collides with it). the only way i can go under it is if i have the istrigger off.(BTW i checked box collider IS the right size)

Can someone please help me fix this problem? Thanks!

The answer was that the character was too tall and was colliding with the box (which was the correct height)