Oval Convex Glass #900A
We carry convex glass also known as bubble glass or domed glass in many antique sizes and shapes along with their modern equivalents. Convex glass here is pictured in a #457 Oval Vintage Walnut Frame. Although convex glass will fit frames we sell they are most commonly ordered with our Vintage Collection frames.
Measuring Convex Glass
Like flat glass, convex bubble glass is measured length and width directly across the glass (not around the bend of the glass). Most of our convex glass has a depth of 3/4" to 1", but deeper bends are possible
One of the most popular sizes we sell is the oval 13 1/2" x 19 5/8". Many people think these odd antique sizes are no longer available, but we stock many of these unusual antique sizes with no custom set up fee required.
We currently stock over 50 standard sizes of convex glass and we also custom bend any size of convex bubble glass up to 22"x28". A paper tracing of the custom bend is required. The glass will be cut to the line drawn on the paper template. To produce your custom size convex glass allow 3-4 weeks delivery after we receive the tracing.
Uses of Convex Glass
Most bubble glass or convex glass is used to cover old antique portraits in which the photographs were convex. We sell convex glass replacements to fit actual antique frames, to replace broken pieces in clocks, gauges and other instruments, as well as to fit our own antique replica frames.
The Process of Bending Glass
Flat glass is laid into frame molds. The glass is then heated to temperatures that allows the glass to slump. Longer heat creates a deeper bend thus creating what is know as bubble glass or convex glass.
In the late 1800's up to about 1940, over half of the picture frames produced in America by some the largest picture frame factories were oval, round, or antique octagon. By comparison less than 5% of all picture frames produced today are oval. A large number of these old frames were family portraits that were covered with convex glass. Many attics and basements are home to these family heirlooms framed in antique frames and often with a cracked piece of convex bubble glass.
Acrylic Domes or Deep Convex Glass?
Convex glass normally has a bend of about 3/4" to 1”. For items that have a depth more than a photo or canvas, you may consider our acrylic domes which fit all our frames and range in depth from 2.5" up to 7".
Posted by Lincoln Watase on 3rd Mar 2017
Convex glass with an oval frame for portraits of my parents came out classically beautiful.
Perfect fit for an antique frame and photograph
Posted by Bryan & Devan Conservation on 24th Feb 2017
As a conservation business, we have many clients that bring us convex photograph portraits in need of conservation and restoration. Antique convex glass is often very difficult to find, and the convex glass that InLine Ovals offers is a great option for replacement of broken or missing glass in convex oval portraits and frames. In this case, the curve of the photograph was a perfect fit to the the curve of the glass.
Posted by Unknown on 8th Sep 2016
Perfect size; very nice glass; however, it arrived broken/damaged in shipment.
Only source I know of, but...
Posted by David Anderson on 17th Aug 2016
I don't need convex glass often, but Inline is the only source I know of, and it's expensive. The problem if you're trying to replace original glass for a print that's also convex, the curve is not as deep and the print will touch the glass. That's not good.
Just what I wanted
Posted by Renee on 28th Apr 2016
The glass was perfect. It fit the frame exactly. I would order this again if needed.
Happy to find the product that I was looking for
Posted by Unknown on 10th Feb 2016
The glass was perfect for my project.