CRL 834BA Brite Anodized Aluminum 5-5/16" No-Draft Speak-Thru

Our CRL No-Draft Speak-Thrus are designed to allow audible transmission of voice requests at ticket windows, box offices, and more. They prevent tampering from the outside and stop drafts to the interior. The 834 Series is made of aluminum. Each unit is individually boxed with gaskets and mounting screws for installation on glass from 1/4" (6 mm) to 1/2" (12 mm) thick. For glass up to 3-3/4" (95 mm) thick you can use the optional Cat. No. 8324 4" (102 mm) screws. No-Draft Speak-Thrus require a minimum hole diameter of 2-1/4" (57 mm) and will cover holes up to 4-1/4" (108 mm). Recommended hole diameter is 3-1/2" (89 mm). SPECIFICATIONS:
Material: Aluminum
Finish: Brite Anodized
Instructions Included
Glass Fabrication Required: Recommended 3-1/2" (89 mm) Diameter Hole
Screws Included: 1 each 8-32 x 1/2", and 1 each 8-32 x 3/8"