KAIR SYSTEM 100 RECTANGULAR - 110MM x 54MM - 90 DEGREE HORIZONTAL BEND Product Summary: This horizontal 90 degree elbow bend can be used to run your ductwork around obstacles, along walls and into ceilings and offers superior performance and durability over flexible alternatives. Both sides are female sockets. The ends will fit over Kair 110mm x 54mm flat ducting pipe (Part: "DUCVKC249").Kair System 100 (SYS-100) 110mm x 54mm rectangular ducting is designed for short duct runs and it can be easily concealed due to its low profile. It is perfect for installations requiring low extraction rates such as bathrooms, toilets, and utility rooms.  It can be flush fitted against ceilings and walls and can be concealed above wall units or inside ceiling voids.  Made in the UK using strong high-quality white polystyrene/polypropylene material. Max / Min Temperature: +60c / -15c. Easy to install and durable, just push-fit duct and fittings together. For permanent fixings, seal joints with silicone sealant, solvent cement, or tape. Kair plastic rigid duct provides superior airflow performance and durability versus flexible duct. Suitable to use in compliance with Part F Building Regulations. Airflow performance independently tested by BSRIA or BRE. Static Pressure Drop in Pascals: 15 l/s = 9.80 Pa 30 l/s = 39.80 Pa 60 l/s = 161.90 Pa. Installation Tips: Kair plastic ducting pipe is lightweight & easy to install. You simply push-fit the duct pipe and fittings together. For permanent fixings, you can seal the joints with a method of your choice (Popular options include silicone sealant, solvent cement, or tape). Rectangular plastic ducting can be carefully cut to the required size using a hacksaw. Offcuts are always useful to keep to hand for joining two female fittings together. If your duct run passes through a particularly cold area, we would recommend considering using our pre-insulated ducting to avoid condensation building up within your ductwork. Click here to view our range of pre-insulated plastic ducting. Alternative Products: Rectangular Ducting System 90 Degree Horizontal 90 Degree Vertical 45 Degree Horizontal 45 Degree Vertical 110mm x 54mm (System 100) DUCVKC238 DUCVKC239