All niChrome frames with SS Card glides for ESD, protective PCB handling during all phases of production. Can be used for Burnin as well. 4 sizes available from stock. Number outside max bd size 40995(55) 18x13x9 11x8 40996(64) 18x13x13 11x12 41006(15) 18x18x13 16x12 41005(8) 18x18x9 16x9 Universal Carts available for these as well