The M1000 series of mini van roof racks from Vantech are designed to fit any mini or midsize van with or without drip rails. The 6" x 1-1/2" mounting bases are bolted down using 1" x 5" interior plates to properly secure the roof racks (drilling required). Leaking water is prevented with poly foam gaskets. The M1000 mini van roof racks have a clearance of 5-1/4" when fully constructed. Mounting brackets have two tie-down points for added security during transport.