Silent Air Auto Back-Up Air Pump B11 First Aid Supplies You'll appreciate the ultra-bright

You'll appreciate the ultra-bright

Reverse side provides 10 metres of standard linear measurement

The 20 cm (8″) diameter black and white discs come with 3/4 lb lead weights

Chemical Resistance

Silent Air Auto Back-Up Air Pump B11 First Aid Supplies You'll appreciate the ultra-brightProduct Code: SAB11 MPN: B11 The Penn Plax Silent Air Auto Back Up Air Pump B11 is an automatic emergency aeration system that helps protect fish and other aquatic organisms during electrical power failures. The unit plugs into a standard AC outlet to monitor incoming power and automatically switches to battery operation when power is interrupted, providing continuous aeration without user intervention. It can also be operated manually as a portable