AVT LOW PROFILE WHITE Rotary Van Roof Ventilator Unit - For Vauxhall Vans. WHITE Rotating Vehicle Van Roof Vent Ventilator For Vauxhall VAN / TRUCK / TRAILER. - The internal shut off surround makes a nice neat finish to the inside of your vehicle, not a rough hole showing like other vents which to not have such surround, and sandwiches the roof skin between the upper and lower parts of the vent for increased stability.
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