Custom Monument 6″ Single – Choose Size Custom Monument Size Don’t see your size? Contact us for a quote. 24 x 6 x 18 Base size: 30 x 12 x 6 24 x 6 x 20 Base size: 36 x 12 x 6 24 x 6 x 24 Base size: 36 x 12 x 6 24 x 6 x 30 Base size: 36 x 12 x 6 30 x 6 x 20 Base size: 36 x 12 x 6 30 x 6 x 24 Base size: 36 x 12 x 6