Non-Insulated Flex Air Aluminum Ducting for Clothing Dryer. Flexible length for exhaust fan blower / inline fan; quick and easy to set up. Built-in steel wire for reinforcement and long lasting performance. 3-Layer Thickness, Flame-retardant coating. Temperature endurance range from 0 ~ 185°F (-18℃ ~ 85℃). FIRE RESISTANT DRYER DUCT - Forms a tight seal to direct fumes and humidity safely away from living spaces. MULTI-PLY Aluminum foil laminate that encapsulates a high density, corrosion resistant wire helix - constructed to replace inferior vinyl ducts. KIT INCLUDES: Two premium 4 inch worm hose clamps for a secure connection to wall and rear of dryer. Upgraded clamps ensure a superior dryer vent hose connection that won't fail. UNIVERSALLY COMPATIBLE with Dryers from Whirlpool, Samsung, LG, GE, Kenmore, Bosch, Maytag, Amana, Electrolux, Speed Queen and more. EASY TO INSTALL for contractors or homeowners. Suitable for gas dryer or electric dryer applications.