How this size fits
This larger oval needs enough width for its curve and sufficient height below lighting, trim or the ceiling to remain visually comfortable.
30 × 42 mirror guide
A 30-by-42-inch oval creates a generous vanity or feature mirror with a softer outline and slightly more height than a 30-by-40 design.
Nominal custom frameless glass dimensions shown. Ready-made framed products list their completed outside dimensions.
Made to the stated size
Centennial Glass can fabricate a frameless mirror to these exact dimensions, finish the exposed edges, add safety backing where appropriate, and arrange professional installation. Framed oval mirrors are available as completed designs in the ready-made collection. Practical material, access and mounting requirements are confirmed before fabrication.

This larger oval needs enough width for its curve and sufficient height below lighting, trim or the ceiling to remain visually comfortable.
Most customers will use the 42-inch dimension vertically. Confirm the full outside size of any ready-made framed design rather than relying on the glass opening alone.
For custom fabrication, 30″ wide × 42″ high describes the frameless glass itself. A ready-made framed product is listed by its completed product dimensions, which may include the frame.
Account for the vanity, faucet, backsplash, lighting, switches, outlets, trim and available mounting surface—not only the open wall width.
Two ways to choose
Choose exact frameless fabrication when the dimensions lead the project, or browse the ready-made collection for a factory-framed oval mirror with a completed profile and finish.
These collection products match the nominal dimensions in their source specifications. Open a product to check its complete finished dimensions and details.
Kerianne
26" W × 41" H × 1.5" D View mirror →
Beckah
26" W × 40" H × 0.5" D View mirror →
Ecru
26" W × 40" H View mirror →
Salta
26" W × 40" H × 0.5" D View mirror →
Webster
26" W × 40" H × 0.5" D View mirror →
Ditto
36" W × 40" H × 2" D View mirror →
Parbuckle
22" W × 42" H × 2.25" D View mirror →
Azam
38.5" W × 36" H × 0.5" D 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.
This shape is custom fabricated as a frameless mirror. For a framed version, browse ready-made designs and compare their 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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