CRL 549 Chrome Plated Brass 5-5/16" No-Draft Speak-Thru

CRL Chrome Plated Brass 5-5/16" No-Draft Speak-Thru is specially designed to provide audible and secure voice transmission. It has chrome plated brass finished and tamper resistant. It prevents tampering from the outside, and stop drafts to the interior. CRL Chrome Plated Brass 5-5/16" No-Draft Speak-Thru is used for voice request in ticket windows, box offices and more. Our customer tells us that this theft-proof locking device offers high quality of security and communication with its stylish design. 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: 834-Aluminum; 549-Brass Finishes: 834-Brite Anodized, Brite Gold Anodized, Duranodic Bronze, Satin Anodized; 549-Chrome Plating Instructions Included Glass Fabrication Required: Recommended 3-1/2" (89 mm) Diameter Hole DS 06/25/2016