Waste Holding Tank; HT630B-SBD; Can Be Used For Black Or Gray Water; 8 Gallon Capacity; 22-1/2 Inch Length x 18-1/2 Inch Width x 6 Inch Height; 3 Inch Diameter Threaded Spigot Fitting; With 1-1/4 Inch Solvent Welded Mounting Flange; ABS Plastic; Single