Falken Design ACM-WT-1-4/3648 Aluminum Composite Sign Panel Sheet, Plastic, 1/4" x 36" x 48", White. $183.63. $183. . 63. Get it as soon as Fri, Mar 4. FREE Shipping by Amazon. Only 2 left in stock (more on the way).ACM/Aluminum Composite (3mm) - Great for large-scale advertising signs up to 4x8 feet. Composite plastic material. sandwiched between two sheets of aluminum, Cost effective lightweight material that is rigid, durable, and. waterproof. Corrugated Plastic (4mm) - A lightweight, economic alternative to aluminum signs. They can be used indoors or.Our aluminum signs are 2mm or approximately 1/13” thick. They are made up of two .008” aluminum sheets and a solid polyethylene core. This total thickness equates to a 13.5 gauge aluminum and is extremely durable. In our experience the 2 mm aluminum signs are extremely durable and sufficiently thick for nearly all …aluminum Sheets can be supplied standard mill finish or they can be brushed. Aluminium sheets are also available as painted sheet, Stucco sheet and Roof Sheeting. Common widths of Aluminium sheet and plate is 1000mm, 1250mm and 1500mm. Common lengths are 2000mm,2500 mm and 3000mm respectively.