Foam Base 12×18 (use for 18″ wide Tanks) (PKT 10) Convenient size to fit most tanks SKU: AFB1218 Category: Aquarium Accessories Related products Ammorid Insert Aquaclear 200 / 50 Aquafx 4ft Cabinet & Hood Black 48×18 Assembled (Pickup or local delivery only) Foam Insert Aquaclear Mini / 20 Ammorid Insert Aquaclear 150 / 30