These lightweight concrete forms are designed to eliminate frost from lifting piers, and can be installed in any type of weather – without breaking down due to wet weather conditions. Lightweight, durable construction. The 100% recycled plastic form helps eliminate negative effects of groundwater. Easy to use, labor saving installation for those contractor and DIY construction projects. Tapered dimensions: 8 in. top diameter to 24 in. bottom diameter x 62 in. high. - The Footing Tube - Concrete Form, 8 in. x 62 in.