If you are looking for 40 b lids for a tank without the center brace, I had a really hard time finding them. I think I ended up getting mine from Petsolutions for $25.
When you buy your 40B lids, make sure you get them from the same manufacturer as the tank. I have Marineland tanks, and the Aequeon lid doesn't fit properly. The glass is about 1/4" too long to sit down in the recess in the rim of the tank.
When you buy your 40B lids, make sure you get them from the same manufacturer as the tank. I have Marineland tanks, and the Aequeon lid doesn't fit properly. The glass is about 1/4" too long to sit down in the recess in the rim of the tank.