Type 4/4X Window Kits

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ESL’s Type 4 and Type 4X  Deep-Hinged Window Kits are designed as a viewing and access window for control panel components.  ESL’s window kits provide UL Listed Type 12, 3R, 4, or 4X environmental protection, prevent unauthorized access, and are manufactured in 304/316L stainless steel or 14 gauge mild steel.

The polycarbonate window offers advanced UV blocking technology resistant to outdoor weathering. ESL window kits are offered in custom sizes allowing for direct installation to any enclosure. Specifications include:

  • UL Listed, Type 12/3R/4/4X
  • Available in 304 and 316L stainless steel or powder-coated carbon steel
  • 1/4 turn latch or “T” handle for quick and easy access (lockable option available)
  • Designed for either left/right, up/down opening with full piano hinging
  • 1/4” thick flush mounted polycarbonate viewing window for clear visibility
  • Advanced UV resistant widow for long-lasting outdoor performance
  • Neoprene gasket ensures a watertight seal


Made in USA