manufactured in Colorado Springs, Colorado and took six to eight weeks to make from design blueprints. It cost US$ 250,000 to construct. The structure is made of black-painted steel with an outer structure of 16 frames, each weighing . The chamber is high and in diameter and weighs a total of , 10 of which consists of steel. Each inner chamber consists of three large steel framed sheets of plexiglass, costing US$225 per sheet. The chains that surround the chamber stretch long and weigh . A flatbed truck is needed to transport the chamber. Assembly in the arena takes eight hours to complete and eight motors are used to suspend the structure over the ring before each event. When not in use, the structure is stored at a dock in Newark, New Jersey. Unlike standard steel cage matches and Hell in a Cell matches, Elimination Chamber matches cannot be held at several arenas due to the structure's massive size and weight, similar to how WarGames matches could only be held at certain arenas. This would play a factor in WWE dropping the annual Elimination Chamber event. In 2017, the Elimination Chamber event returned (2017's event was SmackDown-exclusive while 2018's was Raw-exclusive). In addition, the chamber structure was redesigned, becoming square instead of circular. The pods were also changed from circular to square and feature sliding doors that referees slide open from outside the chamber. At the top of the chamber at its center which is now tall is a large cutout of the WWE logo. The steel grates between the ring and the cage were also replaced with padding. LED lights also line the corners of the structure. The redesign was for practical purposes due to certain venues only being able to house the previous structure, allowing most venues to host the Chamber. Variations The fifth match, held by the ECW brand at December to Dismember, was a slight variation called the Extreme Elimination Chamber. In this variation, each chamber had one of four weapons for the competitors locked inside to hold on to. When each competitor's chamber opened, their weapon entered the match with them. The four weapons used in the match were a crowbar, a table, a steel folding chair and a barbed wire-wrapped baseball bat. The 2015 Elimination Chamber event saw another slight variation of the match, namely the tag team chamber match. Both team members were