Bill Fry Construction - Wm. H. Fry Const. Co. Here's the cutting board for the griddle - Wolf Hardwood Cutting Board - 809711
http://www.abt.com/product/40575/Wolf-809711.html?source=ultimatelybought

The stainless steel cover comes standard with the griddle, charbroiler, and french top, so it would be a replacement part, rather than an accessory:
http://www.subzero-wolf.com/oven/dual-fuel/range-dual-fuel

For parts dealers and parts in your area, see http://www.subzero-wolf.com/locator/

:) Rhoda