Esteem Industries, Inc. Manufactures Hot Air Oven with Double Walled Construction. Esteem Industries, Inc. Has achieved ISO 9001:2008 certifications. Hot Air Oven with Double Walled Construction is provided with the heating elements which are made of high quality nickel/chrome plated nichrome wire which are put inside beads and placed at the bottom and in both the side ribs for uniform temperature all over the work space. Hot Air Oven with Double Walled Construction is provided with air ventilators which are placed near the top of the both sides to remove hot gases and fumes if any.