PUREX 100032, 50/51mm pipe x 80 mm D x 3.0 m. length, connection Purex Coding Kit Fume Extractors: Alpha, 200 / 200i / 400 / 400i /400i Dye Sub/ I Fume 400i Red, Violet, orange, Green/ X base / laser safe | USA distributor of Quatro air purifiers, dust collectors, and fume extractor filters