The Arc Ellipse Linear Pendant brings a clean detailed look to your interior space. The steel plate, that connects to the Opal glass diffusers, seems to pass though the shades instead of around it. Slope ceiling adaptable one way to 45 degrees. Double down-rod fixtures can be used in one direction only. The two down-rods must remain the same length. The fixtures will run parallel or along the slope, but not perpendicular or up the slope. Canopy: 12 inch x 5 inch rectangle. Lifetime Limited Warranty when installed in residential setting. Handcrafted to order by skilled artisans in Vermont, USA.