Smart Tab Trim Tabs by Lectrotab 9" X 8" f/13'-15' Boats w/30-40 HP [ST980-30] Ronstan Boom Hangers the cover will not close

the cover will not close unless the factory supplied valves are in the fully closed position

Features short stem and narrow flange for installing through cockpits

Solid Install - A metal-on-metal locking system multiples your clamping efforts to achieve 100% locking force

D - 5 9/16 in

including bass boats

Smart Tab Trim Tabs by Lectrotab 9" X 8" f/13'-15' Boats w/30-40 HP [ST980-30] Ronstan Boom Hangers the cover will not closeSmart Tab Trim Tabs 9" X 8" for 13' 15' Boats with 30 40 HP If these trim tabs don't provide you with an outstanding performance increase, contact us within 30 days of your purchase. Why buy a manually adjusting trim tab set when you can get the automatic trim tabs that will self adjust and perform better for less money? The breakthrough technology in trim tabs is completely automatic, requiring no operator adjustment while underway. Nauticus trim