16962A Modified Logsdon Fin - 1.5" deep exposed aggregate fin, 3.5" on Center Vac-U-Form™Styrene - Single use.ABS Plastic - Up to 15 reuses. Max Depth: 1.500"On Center: 3.5"Peak: 2.0"Valley: 0.50"Draft: 0.50" Part Size: 48"W. x 120"L.Backing Strips Required Click here for cut-sheet