10x2 air intake, mouth not big enough?

[Lethalweapon100]

Imgur

I feel kinda dumb for asking, but...is there something im missing? This isnt right...is it? I mean...

 

[BBartow]

Needs to be 5 1/8 dia.

 

[Lethalweapon100]

Needs to be 5 1/8 dia.

This is clearly not. So...return and order a new one?

 

[BBartow]

Yes

 

[Lethalweapon100]

Yes

dammit!