The Eagle SpillNest Berm with Removable Side walls assists with safety and compliance on the job site. Available in Economy, Standard and Heavy Duty designs. The sturdy design incorporates high strength connectors and a two-way air relief system to facilitate automatic entry and exit at any angle. Ideal for oil/ gas well sites. Easy to assemble. Fold, stack and store conveniently. Ready for immediate set-up and use. Durable and reusable. Made in the USA.