The sleek, modern facing on the FL40 “flat” insulated metal wall panels (IMPs) from All Weather Insulated Panels often catches the attention of architects, designers and building owners. Adding to their appeal, says Bill Lowery, president of AWIP, are design features such as porthole windows and curved walls, and just about anything else. If it's possible with an insulated metal panel, it can be done with an All-Weather panel.