Kair Rectangular Flat Ducting 220mm x 90mm - 1 Metre Length Flat Channel Pipe Pipe ends are male fittings and will fit inside square 220mm ducting such as System 220 Kair female fittings such as 90 degree bends. Lengths of duct channel can be joined together using a female connector Part: DUCVKC5708. Use flat channel ducting clips to fix ductwork to walls and ceilings. Kair System 220 ducting has comparable airflow performance to 150mm Round Duct. Is designed to be low profile to fit inside ceilings, floor slabs, or to be concealed above kitchen wall units. It is best utilised as part of a ducting system for high powered cooker hood extractors and whole house ventilation systems, such as heat recovery systems or mechanical ventilation systems in offices, houses, and apartments. Max / Min Temperature: +60c / -15c. Made in the UK using UVPC Plastic Easy to install, just push-fit duct and fittings together Suitable to use in compliance with Part F Building Regulations Airflow performance independently tested by BSRIA or BRE Free Air = 18545 mm Static Pressure Drop in Pascals: 60 l/s = 1.2 Pa - 120 l/s = 3.9 Pa - 180 l/s = 8.1 Pa. Kair plastic ducting is durable and suitable for commercial and domestic use. It is perfectly suited for ducting your Tumble Dryer, Bathroom or Kitchen extractor fan, Hydroponics, In-Line Extract Fans, or Cooker Hood. This pipe can be used as a part of a long ductwork run for a variety of purposes including whole house ventilation, passive stack vent, positive input, air conditioning, HVAC, and Heat Recovery Systems. Genuine Kair product & covered by the Kair 100% Satisfaction Guarantee. Search for Kair Ducting for the full range of compatible 220mm x 90mm rectangular fittings, outlets, and grilles. Can be connected to other Kair round and rectangular ducting systems using the appropriate adaptor.