Model # NU2-205V-W

Internet #202909102

TAFCO WINDOWS 41.125 in. x 25.625 in. NailUp2 Vented Wave Pattern Glass Block Window


41.125 in. x 25.625 in. NailUp2 Vented Wave Pattern Glass Block Window

$35938 /each
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Frequently Bought Together

Product Overview

The Tafco Glass Block Window is a pre-fabricated glass block window that is ready to install in your opening. Tafco Glass Block Windows are fabricated with a siliconized adhesive applied by an automated robot system, to insure consistent quality. The crystal clear adhesive is better than mortar or conventional silicone.

  • Wave pattern feature
  • Vent and blocks are both made of real glass
  • Vented, glass-block, vinyl-frame replacement window for installation into a masonry or brick or a wood opening
  • May be installed with mortar or silicone, or from inside or outside with nailing flanges
  • Can be installed at any temperature when using nailing flange and sealing with silicone
  • Nailing flange kit included

Info & Guides

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Grid Width (in.)
Jamb Depth (in.)
Product Depth (in.)
Product Height (in.)
Product Width (in.)
Rough Opening Height (In.)
25.625 in
Rough Opening Width (In.)
41.125 in


Design Pattern
Exterior Color/Finish Family
Hardware Included,Privacy Glass,Venting
Frame Material
Frame Material
Glazing Type
Grid Pattern
Hardware Color/Finish Family
Interior Color/Finish Family
Lock Type
Cam Action
Number of Locks
Product Weight (lb.)
Solar Heat Gain Coefficient
Window Features
Window Type
Glass Block
Window Use Type
New Construction,Replacement

Warranty / Certifications

Energy Star Qualified
Not Qualified
Manufacturer Warranty
limited lifetime

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Customer Questions & Answers

is the vent made of metal?

or is it plastic / vinyl?
Asked by: trudy
Appears to be made of vinyl, the latch is plastic. Disappointing.
Answered by: Archivist
Date published: 2017-07-07

Can I remove the frame

If I cannot get it without the frame can I easily remove the frame. I need a 17.5x31.5 rough size to install into an 18.5 x 32.25 opening. I would simply like to concrete this in place as I have for another window in the basement. The frame would make this difficult to do.
Asked by: Greg
The frame is attached to the blocks with adhesive. I would not try to remove the frame. Tafco makes windows without the vinyl frame as do other manufacturers. With that said, the vinyl frame can be installed in the traditional method, with mortar.
Answered by: ditchf59
Date published: 2017-04-09

Can I install this upside down? I do not want rain running in if someone forgets to shut it.

Can I install this upside down? I do not want rain running in if someone forgets to shut it.
Asked by: Becca
Yes, you can install this upside down.
Answered by: CommunityAnswer
Date published: 2017-07-31

do you sell the same size versions without the vented hatch

want one without the vented window
Asked by: sdm
Model #NU2-328S-I does not have a hatch and is the same size.
Answered by: CommunityAnswer
Date published: 2016-02-24
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Customer Reviews

41.125 in. x 25.625 in. NailUp2 Vented Wave Pattern Glass Block Window is rated 4.4 out of 5 by 31.
Rated 3 out of 5 by from I purchased two NailUp2 Wave Pattern Glass Block Windows with Vent windows. I liked the idea of v... I purchased two NailUp2 Wave Pattern Glass Block Windows with Vent windows. I liked the idea of vinyl frame construction and the ability to use a nailing flange for installation, as I have a 1930s era frame house. I was disappointed in the overall construction, as the vinyl frame on the top of the windows is not straight. One is bowed downward in the middle about 3/16" and the other a little less, about1/8". I used the nailing flanges to install both windows. Aside from the bowed head section of the windows I like everything else. Other reviewers have complained about the vent window seals and screens, but they are of decent quality, and much better than the 1930s vintage windows being replaced. I am planning on ordering more windows as there are five more to replace. However, I hope the next window frames are straight and square.
Date published: 2017-04-09
Rated 5 out of 5 by from Window matches description . ... Window matches description .
Date published: 2017-08-15
Rated 5 out of 5 by from great and secure... great and secure
Date published: 2017-07-25
Rated 4 out of 5 by from Good (standard) glass blockwindow, no instructions I purchased these windows over other similar windows based on vendor's claims it offered more flexible installation options (nail or silicone, outside or inside). While it does come with optional nailing strips, that's about the only feature included. The window is pretty much standard (no complaints), but the installation instructions are non-existent. The instructions are a sticker on the window that says "can be installed with nailing strips or silicone" and that's about it. I've installed a couple of dozen windows in my house to date and I still would have appreciated a page or two of installation instructions/hints/suggestions.
Date published: 2010-02-08
Rated 5 out of 5 by from A very practical replacement for my bathroom window. While looking for a replacement window for my bathroom (shower) I came across this one on the website. This unit turned out to be a wise choice for my particular application. The installation was very simple and although this window is designed for basement applications it worked great in the shower area. The glass block design lets in far greater natural light than the previous opaque window and the vented opening helps in venting damp air from the bathroom.
Date published: 2011-07-14
Rated 5 out of 5 by from Better than I expected Based off of the other reviews we bought three of these windows to replace the old, dated, metal framed ones in our basement. My husband and father in law put all three of these plus one regular window in, in one day. They said they were a breeze! They went right in! The frames of the old windows were cemented into the walls so we had to leave the old frame and cement these windows in, which was kinda what they planned for anyways. We also noticed, compared to the old windows, that these are much more energy efficient. The old windows you could walk by and feel the heat coming in from the outside. These you feel nothing. They are fantastic! We've even put the little window to good use feeding in the hose for the compressor as they are doing some framing as well. Father in Law loved the ease of the installation and my sister in law is now going to be ordering some for her house as well. Great, great buy! Would recommend 100%.
Date published: 2013-07-08
Rated 5 out of 5 by from Quality product at a reasonable price Purchased two of these glass block Windows to replace old double pane, wood frame windows in my basement. The original window frames were rotting due to heavy exposure to moisture. The replacement units were easy to install and there are many videos online showing exactly how to install. I did not use the nailing strips as mine were in installed in the concrete foundation. Purchased a bag of mortar and was able to install both windows in an afternoon. The windows allow enough light to enter but obscure the view due to the wave pattern. Great for security. Vents open easily and seal tight. Great upgrade for your basement!
Date published: 2015-10-06
Rated 4 out of 5 by from My installer installed two of these but during the process one glass was chipped in two places. ... My installer installed two of these but during the process one glass was chipped in two places. I had installed 3 different name brand products of pre-assembled glass block windows. I think the chips might have been avoided if the installer had used masking tape to install and then clean off the windows. I will be purchasing an automotive glass kit to fix the window. thankfully the style's wave may conceal and cover the sharp chipped area. I expressly like the frame for the 2 back windows I had them installed since the window area had gone through some trauma that left the area rough.
Date published: 2016-11-03
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