![GROCO Backing Block f/1-1/4 1-1/2 Seacocks [BB-2] 1st Class Eligible, Brand_GROCO, Marine Plumbing & Ventilation, Marine Plumbing &](http://shopkarisi.com/cdn/shop/products/groco-backing-block-f1-14-1-12-seacocks-bb-2-1st-class-eligible-brand-marine-plumbing-ventilation-fittings-cwr-742985170148-595_1024x1024.jpg?v=1661450789)
![GROCO Backing Block f/1-1/4 1-1/2 Seacocks [BB-2] 1st Class Eligible, Brand_GROCO, Marine Plumbing & Ventilation, Marine Plumbing &](http://shopkarisi.com/cdn/shop/products/groco-backing-block-f1-14-1-12-seacocks-bb-2-1st-class-eligible-brand-marine-plumbing-ventilation-fittings-cwr-742985170148-595_480x480.jpg?v=1661450789)
Backing 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:
- Construction: Bronze
- Box Dimensions: 1"H x 7"W x 9"L WT: 0.25 lbs
- UPC: 742985170148