I was pleased to find a stateside replacement part for the Gigavent ventalator at ACF Greenhouses. Even better is the fact they are located here in Virginia. My cartridge (2015 date code) finally gave out after six years of seasonal use and to find a new one so close by was a treat. The new one should last many years. ACF provided a quick turnaround on my order. I wish they had to option to use PayPal but the order process was fairly quick without it. I'll certainly keep them in mind when I need other greenhouse products.