I have a decent aluminum dog box with top storage that I’ve been using for a while. It suits my needs pretty well. Other than it needing some more vents. I know I can buy the circle shaped vents for around $10 a piece, but would rather have the bigger slide style vents. Anyone know where I can buy the vents? I’ve seen on the internet I can buy them for anywhere between $45-110 but thought I would ask before purchasing. Any help or other ideas would be appreciated. I live in the middle of South Carolina so yall can understand the need of maximum air flow most of the season. Thanks in advance!