District of Columbia Pool Rules for No Diving Pools Sign - 18 x 24 Inches on Heavy-Duty Aluminum (Customize or Leave Blank) Pool Lift Base This 4 inch anti-vortex plate

This 4 inch anti-vortex plate prevents the formation of a vortex and subsequently air entrapment into the pump by forcing any emerging vortex to go around a plate and then into the suction pipe

Pentair elements provide a high degree of water clarity and longer filter cycles

but no block

Recommended for residential pools and light commercial use

District of Columbia Pool Rules for No Diving Pools Sign - 18 x 24 Inches on Heavy-Duty Aluminum (Customize or Leave Blank) Pool Lift Base This 4 inch anti-vortex plateThe District of Columbia Pool Rules Sign for No Diving Pools for all public pools has been designed in accordance with the DC Register Volume 55 No. 52 and is printed on heavy duty aluminum material. This sign is guaranteed to meet the code and regulations for D. C. Pool rules signs are important for all types of pools. Posting a pool rules sign reinforces important safety guidelines for showering, running, glassware, diving, etc., for all pool