Smoke Vents

Mechanical Smoke Vent

ULSV2 Smoke Vent

Mechanical Smoke Vent

Puts you ahead of the standard — automatically.

When smoke vents are required by code, VELUX offers lightweight double-leaf smoke vents, a mechanical solution that exceeds the UL 793 Standard for automatically operated roof vents for smoke and heat.

  • Installation Instructions
  • Product Specs
  • Shop Drawings