Model # 104004

Internet #100538687

Pittsburgh Corning Provantage Vertical Spacer (10-Pack)

Discontinued Pittsburgh Corning

Provantage Vertical Spacer (10-Pack)

  • The spacers helped align the block and stabilizing the wall
  • Makes installing the 4 in. block very easy
  • Great for the do it yourselfer
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Frequently Bought Together

Product Overview

ProVantage glass block spacers allow for easy installation of glass block that will yield professional looking results. Tooled joints are recommended for exterior applications. The jointer compacts the mortar to keep moisture from penetrating the joint.

  • Straight or curved walls
  • Easy to install
  • All glass silicone look or white grout look
  • Consistent, evenly spaced joints

Info & Guides

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


Product Weight (lb.)

Warranty / Certifications

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

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Customer Questions & Answers

Can these spacers be cut to length?

I want to use 6"x8"x4" block to build shelves by stacking them 8" vertical so the 6" face will need to be attached to each other. The shelf material itself will be glass as well. Thank you in advance for your help
Asked by: Commissioner
Yes, this product can be trimmed.
Answered by: CommunityAnswer
Date published: 2016-01-30

Can the vertical spacers be used horizontally if I am making a stack of single blocks for a sidelite for a front door?

Asked by: Jane
Answered by: PittsburghCorning
Date published: 2016-07-09

can the vertical spacers be used with the thinline glass block system. I did not see a thinline spacer.

Asked by: powertool
The silicone sealant installarion for the Thinline Series Glass Blocks is called the Thinline Track Spacer System. There is a Thinline Track Spacer that is 31.5" long and is cut to size to create the vertical spacers. The item number is 120610 and there are six per case. You will need enough of these to go both horizontally and vertically betweenthe blocks. The anchoring for this system is the Perimeter Channel Thinline Series #130909. There are four 48" pieces per carton. In addition to the spacers, channel and glass blocks you will need the Pittsburgh Corning Glass Block Sealant #102133 and either additional sealant for the joints or the ProVantage Glass Block Surface Grout #114006.
Answered by: PittsburghCorning
Date published: 2016-07-09

Do you have instructions and materials on how to build a curved glass block wall?

Asked by: Al
A curved glass block panel will be installed using the Mortar II Installation. Instructions can be found at:
Answered by: PittsburghCorning
Date published: 2016-01-20
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Customer Reviews

Provantage Vertical Spacer (10-Pack) is rated 4.8 out of 5 by 4.
Rated 5 out of 5 by from Great product These vertical spacers do the job as advertised on the site
Date published: 2016-08-02
Rated 5 out of 5 by from excellent product This product makes it very eassy to install the glass blocks. No mess.
Date published: 2011-11-18
Rated 4 out of 5 by from Nice but not needed spacers would have helped for a bigger job. Not needed for this one.
Date published: 2012-01-31
Rated 5 out of 5 by from super easy to use makes the blocks line up perfectly for a solid wall
Date published: 2016-01-24
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