Fiberglass Plenum-Backed Diffuser For T-Bar Lay-In

Molded fiberglass-backed diffusers with a deep plenum cavity to improve performance.
One-inch thick fiberglass covers entire T-Bar opening with an “R” value of 4.2, 6.0 or 8.0. Insulation absorbs sound and accepts standard spin-in tab collars supplied by others.
Tested in compliance with surfaceburning characteristics (ASTM E-84) and erosion test (UL 181). Tested in accordance with ASHRAE Standard 70-1991 and ADC regulations.
Fiberglass plenum are available as a separate part.

How to Specify

For R4.2 High Profile Plenum Back order as: Sku 452535

For R6.0 High Profile Plenum Back order as: Sku 452536

For R8.0 High Profile Plenum Back order as: Sku 20022328

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