ZERO BREEZE Portable AC Window Venting Kit

The ZERO BREEZE Portable AC Window Venting Kit is a rigid window panel that gives the air conditioner's rear ducts a sealed path to the outside. Zero Breeze positions it as the way to cool an enclosed space properly: when a window is left cracked around a loose hose, chilled air leaks back out and warm air finds its way in again, so the compressor keeps running and the battery drains faster. The panel seats in the window channel instead, routes the dual rear ducts outward, and blocks insects and rain from following the hoses in. It can be installed on either the driver-side or passenger-side window. Three versions are cut to the shape of a specific van window and need no modification: the Ram ProMaster (2013+) panel measures 461.5 mm long by 239.2 mm wide at 4.0 mm thick; the Mercedes Sprinter (2007-2024+) panel measures 585.5 mm long by 313.2 mm wide by 239.2 mm high, also 4.0 mm thick; and the Ford Transit (2015-2024) panel measures 463.9 mm long by 248 mm wide at 4.0 mm thick, cut from solid polycarbonate sheet. Each slides into the window track, and the H-shaped rubber seal is pressed down until the gap is closed.

The fourth option, the DIY Venting Kit for Universal Window, is the one to choose when no pre-cut panel exists for your window. Zero Breeze intends it for sedans, SUVs, off-road vehicles, custom RV builds, small homes and boats. It supplies two 600 mm by 400 mm boards at 5.0 mm thick in PVC expansion sheet (Sintra board) - one already drilled with the two duct holes, one left blank - plus a tracing template and an ultrasonic cutting tool. The customer traces the template onto the sheet, cuts the board to that line with the included ultrasonic cutter, trims and shapes the panels to follow the contour of their own window, and then installs the finished panel. In other words, you are cutting the panel yourself to fit an opening the factory versions do not cover, and the accuracy of that cut is what determines whether the seal is tight. Zero Breeze publishes no skill requirement, no cutting-hazard warning and no separate time estimate for the DIY cut; its only stated figure is that most users finish the overall setup in 5 to 10 minutes.

The kit is an optional accessory, not a part the air conditioner needs in order to run. Zero Breeze states that ducts are not required in open areas and that the unit cools effectively without them, and recommends fitting the rear dual ducts in enclosed spaces such as tents, vans and boats to improve cooling efficiency and ventilation. The air conditioner itself arrives with its ducts - front outlet, front and rear inlet, rear outlet and four adapters - along with a drainage pipe, but no window panel of any kind is in that box. The venting kit is sold on its own. Duct adapters are supplied in 150 mm, 130 mm and 110 mm so the kit serves both the Mark 2 and the Mark 3; select the adapter that matches the hose diameter on your own unit. On the Mark 3 the rear outlet duct is roughly 15 cm, the inlet ducts roughly 13 cm, and the front outlet duct roughly 11 cm.

Installation

• Pick the duct adapter that matches your hose diameter - 110 mm, 130 mm or 150 mm
• Fasten the adapter to the panel using the supplied M4 screws
• On the pre-cut vehicle versions, slide the panel into the window track and press the rubber seal fully home
• On the DIY version, trace the template onto the board, cut it with the included ultrasonic cutter, shape it to the window, then install
• Zero Breeze reports that most users complete setup in 5 to 10 minutes