All stainless steel SAE 304 construction (except cart) with red and yellow bands. Less than 10 Ohms of resistivity. This unit is equipped with MIddle Ring with Activated Carbon (MRAC) cartridge for the adsorption of toxic/nuisance fumes and vapors. An optional true HEPA Filter (H14) is also available. Different types of carbon are available. This fuel and solvent recovery vacuum cleaner is specifically designed for the recovery of highly flammable, toxic liquids. This vacuum cleaner system is ideal for the de-fueling and de-puddling of fuel tanks and wings on military or civilian airplanes, as well as for recovering fuel spills. All parts of the vacuum cleaner system has electrical continuity and bonding techniques to ensure static dissipation. Grounding reels are also available for added security. This unit is equipped with a heavy duty powder coated Hydraulic Cart for easy emptying of recovered materials. The heavy duty powder coated Hydraulic Cart allows for the unit to be lifted up to 36" (91 cm) above the ground so that contents can be emptied into a recovery container for disposal.