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Ships within 48 hours · Estimated delivery Aug 13 - Aug 18
Individual ventilation sets can supply up to maximum appliance rated input of 18kW (61
Comes new in blister pack
Population has been dwindling for many years as suitable nest sites have become scarcer
Provides a maximum equivalent area of 6600mm² airflow
Manufactured from tough nylon 66 and is approved to UL 94V-2
100 x Roofing & Cladding Screws 5.5 x 25mm Self Drill Extractor Fans & Vents Individual ventilation sets can supplyProduct Description Roofing & Cladding Self Drilling Screws Pack of 100 Premium self drilling roofing and cladding screws. Size: 5. 5 x 25mm. Washered self driller with hex head for a 8mm socket. For fixing cladding and sheet steel to steel purlins. Zinc plated Elementech coating for superior anti corrosion salt spray tested to 1000 hours. The 16mm rubber washer beneath the aluminium flange expands under pressure and forms a permanent weather seal.