Is 10 mm glass better than 8 mm for a shower door?

Yes, generally. Ten-millimeter tempered glass is stiffer and flexes less than 8 mm, so it feels more solid and holds its shape better in a sliding setup. The trade-off is more weight on the track and rollers.

Does a frameless door leak water at the edges?

Frameless sliding doors rely on seals and a bottom sweep rather than a full frame, so some spray can escape at the gaps if the seals are worn or misaligned. A properly fitted sweep and side seals keep most water in.

What size opening does a 60 by 60 inch door fit?

The listed size is 60 by 60 inches. Measure your actual tub opening and check the door's stated fit before ordering, since sliding doors need the panels to overlap and clear the opening.

How do I keep the black matte finish clean?

Wipe the frame and glass with a soft cloth and mild soap, and avoid abrasive pads that can dull the matte coating. Squeegee the glass after showers to cut down on water spots.

Is tempered glass required for a shower door?

Yes. Shower doors should use tempered safety glass, which is what this door specifies. Tempered glass breaks into small, blunt pieces rather than sharp shards.