Mounting holes are 2

4000 is all brass with a nickel-plated face nut

All units ara supplied with a closed-cell base seal - 100% waterproof

20sq miles East of Clearwater (8-14nm offshore)

Webasto Marine Air Heaters provide a better solution to boaters who require the ultimate in compartment and cabin heating

TH Marine - Straight Thru-Hull Fittings, Part No. TH-1502-B - 1-1/2" Receivers Mounting holes are 22 7 8" White Thru Hull Fitting for 1 1 2" Hose (TH 1502 B) by T H Marine Bulk This product is made of high quality materials to serve you for years to come Designed using state of the art technology and with customers in in mind It will meet your needs ana deliver great quality at an affordable cost