Kair 234mm x 29mm and 310mm x 29mm Rectangular Flat Support Clip for Flat Channel Ducting Support Clip for 234mm x 29mm and 310mm x 29mm Rectangular Ducting. Perfect for use with System 225 Part: DUCVKC706 or System 300 Part: DUCVKC754 flat channel. Kair System 225 & 300 ducting ranges offer a perfect solution for installations where space is restricted. They are ideal for installations into ceiling voids, within walls, or under floors where compact dimensions are of greater importance than airflow rates. We recommend purchasing these clips in pairs and using 4 clips per 1 metre length of duct for normal installs. Made in the UK using strong high-quality white polystyrene/polypropylene material Max / Min Temperature: +60c / -15c. Lightweight and durable Perfectly suited for ducting your Tumble Dryer, Bathroom or Kitchen extractor fan, Hydroponics, In-Line Extract Fans, or Cooker Hood. This item can be used to support long ductwork runs 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 for your peace of mind.