Clamshell - Judy Niemeyer Quilting - Quiltworx Foundation Paper Piecing Pattern Size: 62" X 67" Ref # mar16judypat2x DescriptionUnitPriceQty. Clamshell Pattern only ea. $52.00 Clamshell Fabric Pack only ea. $217.50 Clamshell Fabric Pack plus pattern ea. $269.50