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1570 — Insulated Step-Down Ceiling Diffusers

How to Specify

Provide the following information:

  • Model number
  • Diameter
  • Finish

1570 — Insulated Step-Down Ceiling Diffusers


Submittal Data (99 KB, PDF)
Engineering Data (127 KB, PDF)
  • Provides high air volume delivery in a four-way air diffusion pattern.
  • Four-cone design with fixed core and formed back panel. 
  • Molded fiberglass back meets or exceeds the following: 
    Test and rating reports available upon written request. 
    • ASTM E84 Flame and Smoke Test
    • UL181 Erosion and Impact Test
    • "R" value of 6
    • RR7811 Approval for Los Angeles
  • Accepts unique 2" high snap-in collar (Model 1565) with use of 1565PP push pins.
  • Use with AL10PF plaster frame for surface-mount applications
  • All-steel construction. Formed steel back panel. 
  • Bright White finish standard.

1570 - Insulated Step-Down Ceiling Diffusers- Dimensional Drawing