Holding Tank Roto-Molded 16″W x 44″L x 12″H (25 Gallon) Model #H538 – Recessed End Drain Roto-molded holding tanks are made with a 1/8″ thick outer wall for maximum durability. All Dimensions Include Flange
Ronco Plastics 12 Gallon RV Holding Tank - R-44H
RV Black Water Tanks - Page 5
3 Female Slip X Male Thread Holding Tank Fitting
RV Black Water Tanks - Page 5