OG Rectangle 6"x14"Our OG Rectangle 6x14" Form is the perfect size for serving trays, sushi plates, and more! The OG Rectangle 6x14" Form is also stackable with our OG Rectangle 4. 5x12" Form, allowing for greater depth and versatility. Clay should be left on the OG forms until stiff, leather hard. Each OG Form has a 45 degree angle edge, and 3 4" depth. All Forms are measured in inches.