BathStellarMall prints the awkward number in its own bullet points: shower-pan dimensions are measured by hand, so a delivered pan can run 1-2 cm off the figure on the page. Guess wrong about which of the two numbers moves and your plumber trenches concrete for a footprint that never arrives. Slide a glass door's wall profile out and the opening meets tile that leans. A pan footprint arrives fixed, so pull a tape across the crate on your driveway before the plumber sets a rough-in.
One renovator fighting a nineties guest bath, walls a half-inch out of square, sent back a big-box frameless rectangle and fit an adjustable pivot door instead. No glass shop, no recut, and the walk-in opening still cleared square.
Hang a 30-inch pivot panel in an alcove where nothing wider can travel, or set a 42-inch reversible swing where the room allows it, in chrome, matte black, or brushed gold. Bed an SMC base in thin-set mortar, or recess the curbless model into the subfloor until it finishes flush with the tile you already laid. Read the pooled score before you commit: 4.7 stars across 72 verified reviews, earliest shipments dated June 2025, a track record short enough to count against them.
You measure the opening after the tile goes on, and the top reads a quarter-inch wider than the bottom. That gap sends most prefab doors back. Slide the profile out, tighten the clamps, and your panel sits plumb against a wall that isn't. Two people and one afternoon get it up, and nobody calls a fabricator.
The decisions behind a BathStellarMall adjustable track, a certified pane, a step-free pan, and a tolerance stated up front.
Construction settles, tile goes on crooked, and the opening you measure at the top isn't the one at the bottom. That difference disappears into the track and the profile, so your installer hangs the pane he unpacked instead of ordering a recut.
Check the corner stamp before the card comes out, because a pane that fails should land at your feet as blunt pebbles instead of shards. Read it on the narrowest door here, not only on the widest.
Drop the curbless pan into a recessed subfloor and it finishes flush with the tile you already laid. A shower chair rolls in; a walker crosses without a lift. Aging in place stops being a future renovation and becomes this weekend's tile job.
Hand-measured pans run 1-2 cm off, and you read that line in the product bullets while you shop, not after the crate lands.