Model # 130909

Internet #100318663

Pittsburgh Corning Thinline Perimeter Channels for Thinline Glass Blocks (4-Pack)

Discontinued Pittsburgh Corning

Thinline Perimeter Channels for Thinline Glass Blocks (4-Pack)

  • Easy to work with and fit snugly on the glass block
  • The channel lined up my glass blocks perfectly
  • Great alternative to attach block to opening
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Frequently Bought Together

Product Overview

Made from rigid PVC material, these Pittsburgh Corning Thinline Perimeter Channels for Thinline Glass Blocks (4-Pack) add stability to your Thinline glass block installation by securing the block panel to the surrounding structural support.

  • Used to anchor 3 in. nominal Thinline glass blocks to the surrounding structural perimeter
  • Durable, rigid PVC construction
  • Will not show in finished project
  • Easy to install
  • Made in USA
  • Includes 4 perimeter channels

Info & Guides

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Product Depth (in.)
Product Thickness (in.)
.75 in
Product Width (in.)


Product Weight (lb.)

Warranty / Certifications

Manufacturer Warranty
Pittsburgh Corning promises to replace any glass block accessory that is found to be defective within five years from date of purchase.

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Customer Questions & Answers

I'm doing a glass block window in a shower, do I use the thinline channel in the window?

Is their a video on how to install a glass block window in a wooden frame? problem!! Thank you for your time...
Asked by: Mike
Thin Line is 3 inches wide and lighter.
Answered by: Charles
Date published: 2015-09-20

Do you install the thinline track spacer between the glass blocks as well as next to the wood frames?

Asked by: jd
The Thinline Track Spacers go only between the glass blocks. The anchoring for the Thinline Track Spacer System is a perimeter channel #130919. There are four 48" channels per carton.
Answered by: PittsburghCorning
Date published: 2015-09-24

I want to install a 40inch by 40inch glass block window. I need to know what the rough opening deminsions should be?

I will be using your thinline 8X8X3 glass blocks and your track and molding products.
Asked by: PR5150
The rough opening for a 40" x 40" glass block panel installed with the ThinLine Track Spacer System is 39-5/8" x 39-3/4"
Answered by: PittsburghCorning
Date published: 2015-09-20

Since the lip looks quite low, how do I get the last block in if it is meant to be snug?

I know with glass channels, the U is deep so you can slide glass up into it, and drop it down into the lower channel so there is working room. With glass blocks, you don't have the working room, and since using for a basement exterior window, a gap would not be insulated.
Asked by: ihatemybasement
When using channel, the sides and bottom channels are installed into the opening. The top channel is cut in half lenghtwise and the exterior side of the channel is installed. This allows you to install the top row of blocks. Once the blocks are installed, a bead of the glass block sealant is applied along the top and along the inside of the channel and installed.
Answered by: PittsburghCorningTechExpert
Date published: 2016-08-24
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Customer Reviews

Thinline Perimeter Channels for Thinline Glass Blocks (4-Pack) is rated 3.8 out of 5 by 11.
Rated 5 out of 5 by from The product made my job so easy The tracking lined up my glass blocks perfectly. I used them to make an eight foot wall for my walk in shower. They also made it strong and sturdy. I had it up in no time. I'm a 60 year old woman that has never put up a glass block wall before. And this product made it very easy!
Date published: 2013-06-04
Rated 3 out of 5 by from Good intensions Before I used these I checked with the glass blocks I previously had ordered. The blocks may have been generic as they were a tad too tight to fit the channels. I returned the channels and installed the blocks without them. Be careful when ordering blocks and mounting hardware.
Date published: 2012-12-10
Rated 4 out of 5 by from Channel fits perfectly I only needed one, not 4, so it would be helpful if they could be purchased individually. Channels can pool water if the correct caulk is not used - especially at the bottom of the glass blocks.
Date published: 2012-08-21
Rated 5 out of 5 by from Thinline Perimeter Channels work really well I had no problem installing the perimeter channels, just stick close to the Pittsburgh Corning installation instructions and you won't go wrong. A lot easier than trying to mortar the blocks onto a wood frame.
Date published: 2012-01-24
Rated 5 out of 5 by from Installation is a breeze with these This made the whole project of creating a glass block wall in our shower a breeze. Make sure you cut the top piece in half so you can get the last row in.
Date published: 2015-02-17
Rated 5 out of 5 by from Good Product Got exactly what i thought I was getting. Easy to work with and fit snugly on the glass block panels that were installed in my stall shower. Material was strong, flexible and not brittle in any way.
Date published: 2012-08-14
Rated 1 out of 5 by from Thinline Channel As with many other reviews these channels do not fit "Thinline" blocks. I was using them in a wood frame and found that by splitting them in half with a razor knife and allowing about a 1/16 inch gap between the two halves they worked just fine. Had to add a few fastener holes. Be sure to caulk the blocks into the channel. The real point is that I shouldn't have to mess with them at all.
Date published: 2014-05-23
Rated 1 out of 5 by from Doesn't fit, might prevent proper install Test with your block first. It says "Thinline", and even when buying the P&C "Thinline" block, it pops out because the block is wider than the channel inside width. I couldn't use it at all. I was so disappointed because I had already cut it to length when I found out the block would not stay in it and instead popped out!
Date published: 2013-12-17
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