This well designed White plastic vent is commonly used by Jayco RV's as a body vent. This vent when combined with part number C6246-A forms a through wall body vent which simply clips together and is suitable for an RV with a wall thickness of up to 30mm. It is best suited to flat sided RV's. This vent is part B and features the 4 x 4mm retaining clips see images for detail. The overall dimensions are 243mm (L) x 141mm (W) however the cut-out size is 212mm (L) x 110mm(W).