The SHX-UN BAL is an air balancing vent for use in pressurised stairwells and escape routes. They are designed to help keep an escape route balanced pressure at or below 50 pascals as is required in order for escape route doors to be manually opened in case of an emergency.


  • Can be mounted horizontally if specified (SHX-UN BAL CEI)
  • Can be preset for 45 or 50 pascals opening
  • Opens at 50 pascals, fully open at 55 (for 50 set)
  • For 50 pascal set will start to open at 50 pascals and be fully open at 55. (45 and 50 for 45 set)
  • Has the flexibility of being wall and ceiling mounted (please specify if required)
  • When installing in external walls an EXP external weather louvre or roof cowl is needed
  • Vents are powder-coated to RAL 9003 signal white, and have 4-hour fire rating
  • Manufactured to ISO9001 and Russian GOST certification
  • The products carry a 5-year guarantee and are available ex-stock for next-day delivery if ordered before 12 pm
  • Fits walls from thin panels to 380 mm thick without any additional parts.
  • The SHX-UN BAL comes with wall liner, wall liner extension, fitting kit, intumescent mastic and fitting instructions.


    Fire Rating Certification
    European Approval – Tested by BM Trada, Standard Type BS EN 1363 – 1 / BS EN 1364-1, Report No. BMT/FEI/F15056 4 Hour integrity

    US Approval – Tested by Guardian Laboratories USA, Standard Type UL555 & ASTME 119-08a, Report No. GL 10010 2 hour integrity