These speakers are UV-resistant so you can worry less about the sun damaging your equipment and more about your great sound system

through 30 Amps

Heavy Duty Products

Installs onthe the mast just below the spreaders

RCA + speaker wire inputs

Groco - Backing Block, Part No. BB-2 MMarine Online These speakers are UV-resistant soEach size fits multiple seacock sizes. Press threaded brass inserts into the hull side of the backing block into the holes that match the seacock flange. Rigid 1 2" thickness provides secure installation but is flexible enough to conform to minor hull curvature. Will not swell or absorb moisture. Fits Seacock Sizes Dia. Insert Threads 1250 & 1500 5. 38 5 16" 18