Whynter exhaust hose for Whynter models arc-08wb, arc-10wb, arc-126md, arc-142bx, arc-148ms & arc-148mhp. * Twist on Version 1 Models * Please note that there are two versions of the Exhaust/ Intake Hose. Please make sure to check the production year prior to purchase to determine the version compatible with your model. Models with a production year prior to 2017 are considered Version 1 (V1) and models with a production year of 2017 or after are Version 2 (V2). You can find the production year from the serial number located on the rating label sticker of the product. The production year is listed in sixth and seventh digit in the serial number. For example: Serial number 1234516123456B represents a 2016 production year which the unit uses Version 1 accessories. Serial number 1234517123456B represents a 2017 production year which the unit uses Version 2 accessories.