Altech Corp 3-001-Q-11 Thermoplastic Enclosure Pushbutton 1 Hole, 22mm, Lot of 11 total New (9192)K. Manufacturer: Altech Corp Teknic. Model #/ Model: 3-001-Q-11 Thermoplastic Enclosure Pushbutton. Enclosure,1 Hole,22mm,Therma Plas,White Top/Black Bottom.