CRL Metal Cover Speak-Thru

Screened Opening for Insect Free Environment 4" and 6" (102 and 152 mm) Models Available in Two Finishes Choice of Metal or Lucite Cover CRL Covered Speak-Thrus are available with two styles of covers; all metal, or metal outer ring with lucite vision port. Both styles are screened to provide an insect-free environment. These heavy-duty units are available in satin anodized or bronze anodized finishes. Both 4" and 6" (102 and 152 mm) sizes are made to be glazed in 1/4" (6 mm) glass.NOTE: Optional thickness adapter rings are available for 4" (102 mm) speak-thru only. Use. Cat. No. TAR12 for 1/2" (12 mm) glass and Cat. No. TAR134 for 1-3/4" (44 mm) doors.SPECIFICATIONS:Materials: Aluminum; Lucite; Perforated Aluminum PlateFinishes: Satin Anodized or Duranodic BronzeInstructions IncludedGlass Fabrication: 4" (102 mm); Requires a 3-1/2" (89 mm) Diameter Hole