AK Industries Septic Tank Risers

Replacement lid for AK Industries septic tank with 20" opening. AK Industries 20" Lid only fits AK Industries Tanks or risers with a 20" opening . Outside diameter of lid is 23 1/2"   AK 20" Riser Lid Drawing AKS11200    

Riser to extend AK Industries 20" septic tank opening to surface. AK Industries 20" Riser for use with any AK Industries Tank with a 20" opening . Remove tank lid and stack riser or risers on tank.  AK Industries 20" risers are stackable...

Riser to extend AK Industries 20" septic tank opening to surface. AK Industries 20" Riser for use with any AK Industries Tank with a 20" opening . Remove tank lid and stack riser or risers on tank.  AK Industries 20" risers are stackable...