Round Convex Glass #900C

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Hexagon Convex Glass on this page only - to order a Frame & Glass together select your frame first.
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  • Round Convex Glass
  • Round Convex Glass
  • Round Convex Glass
  • Convex Glass - Side View
  • Convex Glass - Side View
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Product Description

We have been bending and fitting antique replica convex glass (also known as bubble glass or domed glass) since the early 1970s, and we currently stock most antique sizes and shapes along with their modern equivalents. Although round convex glass is most popular with our Vintage Collection of frames, our convex bubble glass will fit any frame we make.

Measuring Convex Glass

Round Convex bubble glass is measured just like round flat glass, measuring length and width directly across the glass (not around the bend of the glass). Round convex glass generally has a depth of between 3/4" to 1" although deeper bends are possible. The most popular sizes often seem unusual such as the Oval 13 1/2" x 19 5/8". Many people are concerned that these odd sizes are no longer available or will require custom bending fees. However, we stock many of these unusual antique sizes, and most often no custom set up fees are required.

Although we stock 15 standard sizes of round convex glass, we also custom bend any size of convex bubble glass up to 22" x 22". Each custom bend requires a paper tracing of the size required. The line you draw will be the line the glass is cut to. You will need to allow 3-4 weeks delivery after we receiving the tracing to produce your custom size convex glass.


Although round picture frames make up less than 5% of all picture frames produced today, this has not always been the case. Over half of the picture frames produced in America by some the largest picture frame factories in the late 1800's up to about 1940 were oval picture frames, round picture frames, or antique octagon picture frames. A large percentage of these frames were used to frame family portraits with convex glass. Today many attics and basements are home to these family heirlooms framed in antique frames and often broken convex bubble glass.

Victorian Frame Company has a long history of bending convex glass replacements for these images. Our glass bending started in the early 1970’s and today we continue to manufacture convex glass along with a unique collection of antique replica frames. See our Vintage Collection of frames.

Uses of Convex Glass

Most round convex glass is used to cover antique portraits in which the photographs themselves were also convex. We produce convex glass to fit our own antique replica frames, and also can supply a round convex glass replacement to fit actual antique frames. We also regularly produce convex glass replacements to replace broken pieces in clocks, gauges and other instruments.

The Bending Process

Convex Glass is made by laying flat glass into frame molds and heating the glass to temperatures that allow the glass to slump. Longer heat creates a deeper bend. 

Deep Convex Glass or Acrylic Domes?

Round convex glass normally has a bend of about 3/4" to 1”. If you are displaying an item that has more depth than a photo or canvas, then you may consider using our oval acrylic domes which fit all our frames and range in depth from 2.5" up to 7". To view our acrylic domes click here.

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Additional Information

Convex Glass
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7 Reviews

  • 5
    Convex glass

    Posted by jd on 16th Jan 2023

    great all the way around

  • 5
    Round convex glass

    Posted by John Semonin on 21st Oct 2022

    Excellent product. Extremely well packaged. Shipped on timely basis.

  • 5
    After working with Sherry item fit my antique clock perfectly

    Posted by John Semonin on 24th Apr 2021

    Sherry spent several phone calls working with us to get the appropriate product for a valuable antique clock very much appreciated Thank you

  • 5

    Posted by josephine r strange on 21st Feb 2021

    Have a school clock over 100 years old,i broke the glass on it,thank you fits perfect!

  • 5
    Domed glass

    Posted by Unknown on 22nd Feb 2018

    Purchased a piece of domed glass for a custom clock that I'm making. Nice quality at a reasonable price. Fast shipping with good protection.

  • 5
    Excellent product and service!

    Posted by Mickie Mueller on 26th Jan 2015

    The website was easy to navigate and I got immediate notification after I placed my order. When the glass arrived it was packed really well, it's obvious that they really know what they're doing. Perfect, clear, convex glass in excellent shape, exactly what I needed. I will be purchasing from them again and recommending as well!

  • 5
    Glass fit well to my antique frame

    Posted by Unknown on 9th Jul 2013

    Perfect fit to my antique frame. Thank you!!

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