Permanently lubricated upper and lower ball bearings that ensure long life and no maintenance. All aluminum rust-free. Rigid spider type structure. Riveted at every connection. 21 air foil curved vanes with rolled van edges to deflect water. Exclusive vari-pitch base adjusts to 12/12 roof pitch. Large flashing for easy installation. Tested to withstand winds of 147 m.p.h. Includes base. Dade County Approved Acceptance #96-0123.01
- Lomanco #BIB-12B 12″ Black Ventilator
- LOMANCO