18" Double Wall B Vent SKU 18BVF Please select 18" BVENT 0/12-6/12 ADJ FLSHNG18" BVENT 45° ELBOW18" BVENT ADJ STORM COLLAR18" BVENT STANDARD TEE18" BVENT HIGH WIND CAP18" BVENT 18" LENGTH18" BVENT 18" ADJ LENGTH18" BVENT 36" LENGTH Log in to view price