This is a genuine MaxxAir replacement operator mechanism (manual-lift type) for roof-vent assemblies. It is used when the lid of your roof vent will no longer open or close reliably via the manual crank handle typically due to the internal gearbox / lift-gear wearing out or failing.

Style: Manual lift operator (crank-handle type) for MaxxAir roof vents.

Construction: Metal gearbox (gear-train) designed for repeated lid-lifting cycles.

Compatible models (manual lift MaxxAir/MaxxFan series):
4000K, 4301K and  4401K only.

Frequently Asked Questions 

Q: What does this operator mechanism actually do?
It replaces the internal gear-box unit that translates the manual crank handle motion into lift-arm movement for the vent lid. If that internal gear is stripped or worn, the lid may not open or close properly.

Q: How do I know if this part will fit my vent?

 If you have a manual Lift Maxx vent.

Q: Does this include the crank handle, lid or motor?
No , this part is the operator mechanism (gear-case) only.