GROCO Backing Block f/1-1/4" 1-1/2" Seacocks [BB-2] Brand_Monarch Marine Compatible with models: H5000 and

Compatible with models: H5000 and H3000

All meet ABYC A-23 for boats up to 12 meters

Sensitivity - 94dB

Multi-Pad Organizer

2006 & newer: F50

GROCO Backing Block f/1-1/4" 1-1/2" Seacocks [BB-2] Brand_Monarch Marine Compatible with models: H5000 andBacking Block for 1 1 4" & 1 1 2" Seacocks Features: Each 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 Made from an environmentally friendly PVC foam specially formulated for marine applications Specifications: