Model # 120297

Internet #100318678

Store SO SKU #143120

Pittsburgh Corning Decora Tridron 7-3/4 in. x 4 in. x 3-7/8 in. 45-Degree Glass Blocks (4-Pack)

Discontinued Pittsburgh Corning

Decora Tridron 7-3/4 in. x 4 in. x 3-7/8 in. 45-Degree Glass Blocks (4-Pack)

  • The 45 degree block allows you to make up to full circles
  • Draws light into the adjacent room but discreet
  • Good for creating serpintine walls
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Frequently Bought Together

Product Overview

Get creative with these Pittsburgh Corning Decora Tridron 7-3/4 in. x 4 in. x 3-7/8 in. 45-Degree Glass Blocks (4-Pack) that feature a 45-degree design for creating angled or curving enclosures. The Decora pattern provides optimum lighting while maintaining privacy.

  • Decora pattern features wavy undulations
  • 100% glass construction
  • 45-degree design enables corner construction and circular designs
  • Provides maximum light transmission with subtle visual distortion for privacy
  • Made in USA
  • Includes 4 blocks
  • Note: Product may vary by store.

Info & Guides

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Product Depth (in.)
Product Height (in.)
Product Thickness (in.)
3.875 in
Product Width (in.)


Color Family
Insulation R-Value
Product Weight (lb.)
Thermal Conductivity in BTU
.51 Btu

Warranty / Certifications

Manufacturer Warranty
Pittsburgh Corning promises to replace any glass block that are found to be defective within five years from date of purchase.
UL Fire Rated

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Customer Questions & Answers

Where are the Provantage spacers for this product?

I assume I need a special spacer for this Tridron since there is one for the Hedron. In fact, I even found an image on the web which proves it exists, just not in HomeDepot catalog. What do people do without the spacer? Is the mortaring approach preferred?
Asked by: Carabellian
Don't know if this helps. but when I used 4 of these hedron blocks in a small shower area I mortared the horizontal joints and used the spacers and tubes of adhesive for the vertical joints. I also used the metal reinforcement in the mortar and wall turned out very solid. A bit more work but cheaper to use mortar. I also didn't use plastic spacers for mortar joints but just eyeballed and leveled and it looks great.
Answered by: jimbob
Date published: 2015-09-20

Do these come in the full line of Decora colors ?

Interested in one of the green colors and use it as a recessed kickplate for a corner cabinet. Can these blocks safely be used as kickplates under a cabinet ? The cabinet can actually be supported by a second wooden kickplate behind the glass block. Thought it might make an unusual and attractive look when combined with two pony walls made with glass block which will have marble tops on them.
Asked by: 49erx2
The Tridron is available in the Decora or IceScapes pattern in clear glass only. If glass blocks are kicked, bumped with a broom, mop, buffer etc., they could possibly be broken.
Answered by: PittsburghCorning
Date published: 2015-10-12

Is there a top for this block that would allow seamless transition from 'end blocks' in going around a corner?

I was going to make a wall with a 90 degree angle, topped with the curved 'end blocks', but it seems like there is no matching curve to go on the corner block.
Asked by: Whimsey
There is not a fishing unit for the Tridron Glass Block.If your wall is high enough, you could just finish off the top with a bed of mortar. if you wantto finish it off, you can cut pieces of ceramic tile, glass tile etc. to the size/shape of the block and mortar it to the top of the Tridron.
Answered by: PittsburghCorning
Date published: 2015-11-12

How do I order individual glass block, I need a quantity of 9 of Model #120297.

Asked by: Anonymous
The Tridron Glass Blocks would need to be ordered in even cases of 4/case. You'd need to order 3 cases.
Answered by: PittsburghCorningTechExpert
Date published: 2015-09-17
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Customer Reviews

Decora Tridron 7-3/4 in. x 4 in. x 3-7/8 in. 45-Degree Glass Blocks (4-Pack) is rated 4.3 out of 5 by 4.
Rated 4 out of 5 by from good product but couldn't use it. We could have used this product if you had a better diagram of the dimensions. Width, depth and height don't work very well on an object of this shape. Since it was not in the store, we had to guess on how the dimensions were made and we guessed wrong by just a little bit and ultimately had to return them.
Date published: 2013-02-12
Rated 4 out of 5 by from As Ordered, Great Quality - too bad I had to buy four and only needed one The blocks arrived on time and were great quality. I wish I could have bought one as now I have 3 blocks left that I don't need. They come 4 to a box.
Date published: 2015-01-10
Rated 5 out of 5 by from best purchase ever product description very accurately described the product, very happy.
Date published: 2015-01-14
Rated 4 out of 5 by from Looks great, nice product This was exactly the product I was looking for. The glass wall looks great.
Date published: 2013-02-05
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