Products OthersVent Back Thru-Hull Ditto 197-00208-00 Item Number : 197-00208-00 Description : For hull up to 1”thick. You May Also Be Interested In Gas Tank Vent 556-12051-00 Gas Tank Vent 197-00205-00 Horn Bollard Cleat 956-03830-00 Radar Reflector 956-06100-00