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Block windows in a bathroom. Block / Privacy

We offer high quality Hy-Lite brand acrylic block windows. They are easy to install and resistant to sagging because of their light weight. They come in all sorts of colors and designs. They are backed by a 10-year manufacturer's warranty.

Safety glazing approved, Hy-Lite acrylic block panels and windows are a strong alternative to traditional glass block construction. Made of lightweight acrylic, the blocks are connected by resilient polymer clips and are pre-assembled into panels or complete window units for precision installation. Because the blocks are over 70% lighter than conventional glass block, it allows them to be used virtually anywhere, with little chance of the blocks sagging or caulk lines cracking over time.

Block windows Block Construction

  • High-quality durable acrylic blocks stand up against harsh weather conditions and resist discoloration and scratching.
  • Hermetically sealed to help prevent condensation.
  • Optimum air space sizes to keep convection and conduction rates low.
  • Used in window applications, Hy-Lite block units offer similar structural and thermal benefits as traditional, dual-glazed window units.
Frame Construction


  • Mechanically-fastened aluminum frames for new construction applications.
  • Thermally-broken by a non-conductive resin for increased thermal performance.
  • Non-obtrusive, streamlined design.
  • For interior home-accent use, frames can be capped with flat or rounded end caps for easy finishing.
  • Available 45- or 90-degree corner caps to connect panels in multiple formations.
  • Several color options for virtually all interior and exterior home designs.
  • Fusion-welded vinyl framing can be used for both new construction and retrofit applications.
  • Maintenance-free vinyl never needs painting and won't discolor.
  • Available in white and tan.
Entry with block windows. Caulking

Utilizing advanced technology, Hy-Lite's innovative caulking compound is specially formulated to spread and dry evenly, sealing to the block on all sides. Set deep within the connector channels, the compound completely seals over rugged polymer attachment clips that connect the blocks together at every corner. Mechanically applied for even distribution, the caulking is cured and systematically air-dried - resulting in smooth, straight lines that will not crack, flake, chip or discolor.


Both new construction and retrofit units come pre-assembled for quick installation. Integral nailing fins and a variety of accessory options make quick work of any job.

Comprehensive Warranty

All Hy-Lite block, panels, windows and hardware components are backed by a 10-year warranty. The comprehensive coverage includes block and caulk discoloration and seal failure, panel and window frame workmanship and total unit discoloration under normal weather conditions. For complete warranty information please talk to one of our sales persons.

More Information

We recommend visiting Hy-Lite's website for more in-depth information on their block windows. We have samples of their windows in our showroom and multiple catalogs for viewing as well.

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