The front is 3/4" and the tank is only 24" tall so there's no noticeable bowing. Thankfully this spot is at the top so there's less pressure. Just incredibly aggravating to spend so much money on this tank and have janky craftsmanship.If you take a straight edge and hold it across the front panel , is there any bowing ? Many people that make acrylic tanks don't use a thick enough acrylic. This keeps the price down but it doesn't allow enough surface area for a proper glue joint.