The inline shower enclosure with a seat is a great idea. Having a seat in the shower is very convenient. The look is very appealing also. The seat should always be slanted away from the side wall so that water doesn't puddle up. We have had contractors fabricate the seat close to the dam leaving a few inches away. There should be at least 8" or more space between the shower glass and the seat. The best shower seat is one that is flush with the outside dam. we can notch the shower glass panel around the seat to match it perfectly. If you have already a seat that is next to the dam that is no problem we can work with it.