How this size fits
This size suits a larger single vanity or wall where additional height is useful but a full-length mirror would be unnecessary.
30 × 42 mirror guide
A 30-by-42-inch rectangle adds two inches of viewing height beyond a 30-by-40 mirror while retaining a familiar proportion for vanities and dressing areas.
Nominal mirror dimensions shown. A custom frame increases the finished outside size unless specified otherwise.
Made to the stated size
Centennial Glass can fabricate the mirror to these exact dimensions, finish the exposed edges, add safety backing where appropriate, complete it with a selected wood or metal frame, and arrange professional installation. Practical material, access and mounting requirements are confirmed before fabrication.

This size suits a larger single vanity or wall where additional height is useful but a full-length mirror would be unnecessary.
Use 30″ W × 42″ H for a taller portrait reflection, or rotate it to 42″ W × 30″ H when the vanity and mounting system favour a wider composition.
For a frameless mirror, 30″ wide × 42″ high can describe the glass itself. With a custom frame, confirm whether those measurements refer to the mirror opening or the completed outside dimensions.
Account for the vanity, faucet, backsplash, lighting, switches, outlets, trim and available mounting surface—not only the open wall width.
Exact dimensions, multiple finishes
The same 30 × 42 mirror can take on a very different character depending on its edge treatment, frame profile, finish and mounting details.
These collection products match the nominal dimensions in their source specifications. Open a product to check its complete finished dimensions and details.
Capiz
30" W × 40" H × 1" D View mirror →
Carmelle
30" W × 40" H × 0.5" D View mirror →
Hawkwell
30" W × 40" H × 1.5" D View mirror →
Marco
30" W × 40" H × 1" D View mirror →
Nolana
30" W × 40" H × 1" D View mirror →
Raizel
30" W × 40" H × 0.5" D View mirror →
Tida
30" W × 40" H × 2" D View mirror →
Amara
30" W × 45" H View mirror →
Nearby alternatives are not represented as the same size. Their actual catalogue dimensions are shown on each card.
Yes. Centennial can fabricate this size as a custom frameless mirror, subject to final confirmation of the measurements, edge finish and installation conditions.
Yes. This rectangular or square mirror can be paired with a custom wood or metal frame. Confirm whether the stated size refers to the glass or the completed outside dimensions.
Measure the wall and every nearby constraint, including lighting, outlets, switches, faucets, backsplashes, trim and the route into the room.
The page identifies exact catalogue matches when available and clearly labels nearby alternatives with their actual dimensions. Visit the showroom to compare the collection in person.
Compare dimensions
Compare the options
See ready-made proportions and frame finishes in person, or bring the project measurements to discuss a custom 30 × 42 mirror.
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