KAIR 220MM X 90MM RECTANGULAR TO ROUND 150MM FIXED MALE ELBOW ADAPTOR Product Description: Kair 90 degree elbow adaptor with round and rectangular spigots. At one end there is a fixed 150mm Round Male Spigot that fits inside Kair 150mm round duct pipe (Part: "DUCVKC670") or flexible hose (Part: "DUCP0092/152/35"). The other end is a female socket and fits over Kair 220mm x 90mm Rectangular Duct Pipe (Part: "DUCVKC5704"). PVC Flexible Hose 220mm x 90mm (Part: "DUCR3M/220/90") will fit over spigot. Allows you to convert between Kair 150mm round and 220mm x 90mm rectangular ducting systems. Easy to fit and durable. Made in the UK using high-quality high impact polystyrene plastic. Max / Min Temperature: +60c / -15c. Suitable to use in compliance with Part F Building Regulations. Minumum free area of 18,545mm² Static pressure drop in pascals (Pa): 60 l/s = 10.6 Pa 120 l/s = 41.8 Pa 180 l/s = 94.1 Pa Installation Tips: Designed to be low profile to fit inside ceilings, floor slabs, or to be concealed above kitchen wall units. For permanent fixings, you can seal the joints with a method of your choice (Popular options include silicone sealant, solvent cement, or tape) Applications: Perfectly suited for ducting your Bathroom or Kitchen extractor fan, hydroponics, in-line extract Fans, tumble dryer, or cooker hood. This bend 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 ventilation, air conditioning, HVAC, and heat recovery systems.Kair System 220 ducting has comparable airflow performance to 150mm round duct. It is best utilised as part of a ducting system for high powered cooker hood extractors and whole house ventilation systems.  Kair 150mm Round duct is ideal for high-powered cooker hoods and extract systems, and long ducting runs for whole house ventilation systems. Looking for Compatible Ducting? Click here to view the full range of Kair 220mm x 90mm Rectangular Ducting Products Click here to view the full range of Kair 125mm Round / 150mm x 70mm Rectangular Ducting Products.