Kair Rectangular 308mm x 29mm - 12 x 1 inch Flat Ducting 90 Degree Vertival (Upward) Elbow Bend. Both sides are female sockets. The ends will fit over 310mm ducting system 310mm x 29mm flat ducting pipe Part: DUCVKC754. Perfect solution for installations where space is restricted. It is ideal for installations into ceiling voids, within walls, or under floors where compact dimensions are of greater importance than airflow rates. 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, air conditioning, HVAC, and Heat Recovery Systems. Static Pressure Drop in Pascals: 15 l/s = 4.61 Pa 30 l/s = 16.77 Pa 60 l/s = 61.06 Pa Airflow performance independently tested by BSRIA or BRE Max / Min Temperature: +60c / -15c. Made in the UK using strong high-quality white polystyrene / polypropylene material. 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.