Replacement roof (crank) vent source

[Joseph]

Hello,

Have a 25-30 year old Viking popup that needs to have the roof vent replaced due to cracks and leaks. Would like to replace the whole assembly. local place doesn't have one and can't tell me when they'll get one in stock. Trying to find one online but have been unsuccessful. Wondering if anyone might know a place that carries them. Attached pic of it. TIA

 

[NLB]

If it’s 14x14 inch opening, Amazon has pages of them. Pay attention to thickness of roof structure so it will fit properly.