Review on Enhance Airflow Efficiency with Panasonic FV-NLF06G WhisperLine 6-Inch Duct Inlet Grille by Jake Meyer

I purchased this installation kit with a built in Panasonic fan. This listing is called "Installation Kit" and shows the check valve and zip ties and the 4" grille. The kit **DOES NOT INCLUDE THE REVERSE DAMPER** although it is shown and implied in the photo. in the title. This **NOT** is really a true installation kit, it's just a 4" intake grille. After receiving this incomplete kit, it turned out that Panasonic actually sells a complete installation kit, but it is PC-NLF04S. The photo and name these guys show in this misleading listing really match this other product Honestly I still give the seller 2 stars as this is the correct 4" fan grill. Note however that this is NOT an installation kit as stated in the title and picture, it is for the grate ONLY. You will need to purchase the check valve (and zip ties) separately from another source.