![GROCO Backing Block f\/2" 2-1\/2" Seacocks [BB-3]](https://cdn11.bigcommerce.com/s-e6ht4dde3g/images/stencil/1280x1280/products/19755/23671/74173XL__36795.1601536680.jpg?c=2 "GROCO Backing Block f\/2\" 2-1\/2\" Seacocks [BB-3]")
Backing Block for 2" & 2-1/2" 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:
- Construction: Bronze
- Box Dimensions: 1"H x 7"W x 7"L WT: 0.45 lbs
- UPC: 742985170155
![GROCO Backing Block f\/1-1\/4" 1-1\/2" Seacocks [BB-2]](https://cdn11.bigcommerce.com/s-e6ht4dde3g/images/stencil/500x659/products/19047/22542/72848XL__20622.1601535076.jpg?c=2 "GROCO Backing Block f\/1-1\/4\" 1-1\/2\" Seacocks [BB-2]")
![GROCO Backing Block f\/3\/4" 1" Seacocks [BB-1]](https://cdn11.bigcommerce.com/s-e6ht4dde3g/images/stencil/500x659/products/19046/22541/72847XL__25322.1601535074.jpg?c=2 "GROCO Backing Block f\/3\/4\" 1\" Seacocks [BB-1]")
![GROCO 3" Safety Seacock w\/2-1\/2" Side Port [SBV-3000-P]](https://cdn11.bigcommerce.com/s-e6ht4dde3g/images/stencil/500x659/products/38088/49450/75375XL__56321.1670613510.jpg?c=2 "GROCO 3\" Safety Seacock w\/2-1\/2\" Side Port [SBV-3000-P]")