Whitecap Teak Trim Ring - 4" Inner Diameter Opening [61974] Marine Plumbing & Ventilation | Fittings The locking collar poles offer

The locking collar poles offer "Universal Fit" because customers can use them with a wide variety of Attwood 2-pin straight or angled bases

which means all of our air horns meet the ABYC and NMMA regulations for boats up to 20 meters/66 feet

(2) 7238 A-Series White Toggle Circuit Breaker - Double Pole 30A

Installation hardware included

Heavy Duty Performance Trim Tabs

Whitecap Teak Trim Ring - 4" Inner Diameter Opening [61974] Marine Plumbing & Ventilation | Fittings The locking collar poles offerTeak Trim Ring 6 3 8" Diameter Trim Ring 4" Inner Diameter Opening 3 8" Thick 6" Inner Diameter (Inside Flange) Pre Drilled Mounting Holes Back Recessed, 1 8" Flange Use to trim out portholes