Whale Side Entry Plastic Strum Box with Non-Return Valve (25mm & 38mm) W-SB4222

The Whale SB4222 non-metallic strum box prevents debris from entering the bilge pump hose, whilst the integral non-return valve stops any backwards flow of water from returning into the bilge. The strainer plate is removable for easy cleaning.
The strum box features a side entry hose spigot that is suitable for 25mm and 38mm inside diameter hose.