... for both vertical and horizontal installationModels AE-Q15 2way,DN15(15mm),3-wire AE-Q15-3 3way,DN15(15mm),3- ... 15mm),3-wire AE-Q15MS 2way,DN15(15mm),6-wire AE-Q15-3MS 3way,DN15(15mm),6-wire AE-Q20MS 2way,DN20 ... (20mm),6-wire AE-Q20-3MS 3way ... ,DN15(15mm),6-wire AE-Q25MS 2way,DN25 ...