Improve the performance of your RV air conditioner! The RV Airflow is a patent-pending module that installs into the plenum, the space between the bottom of your air-conditioning, that captures 100% of the air and directs it in an optimized way into your RV's existing duct work.  The module is a non-electrical, non-mechanical device that removes air friction and turbulence, allowing your roof mounted air-conditioner to operate at is designed capacity. Increases A/C air volume Cools your unit faster Improves efficiency, leading to energy and cost savings Balances air flow throughout the RV Reduces noise This Model of RV Airflow Systems will fit the Dometic Penguin 2 AC. Click here to see how to measure and confirm Direct Fit to ensure our system will work with your RV. Did not Fit or didn't match our requirements? Click here to see what measurements we will need to ensure a custom fit.  If you have questions about whether it will work with your specific model please contact us to confirm. To maximize performance install one RV Airflow per A/C unit The RV Airflow System is manufactured from 3lb Expanded Polystyrene (EPS), the highest density available. It is highly durable, temperature and water resistant and prevents bacteria and mold growth.  It contains no CFC, HCFC or HFC blowing agents or formaldehyde, is chemically inert so it does not produce methane gas or any contaminating leachates and is 100% recyclable!  RV Airflow System kits are custom made here in the US, please allow 3-5 days to process your order. Patent Pending   Please note that we are unable to reply to comments left in the reviews.  If you have any questions or issues, please contact us at (574) 536-2472 or via e-mail at support@rpicomponents.com