Adjustable Z-Blade Louver with Fusible Link activated at 165 Degrees F is Ideal for Use in Steel and Composite Fire Doors up to 1-1/2 Hour Rating. The Self-Attaching Frame Style is Ideal for Installation in Existing Door Cutouts.

Material: 18 gauge CRS frame. Min size 10" x 6", Max 24" x 24".

Louver: Z-blade louver is riveted to the operating bar and frame at 1" intervals to welded 1-9/16" deep frame. Mechanical Stop holds blades open.

Frame: Mitered and welded corners: screws fastened through the prepared frame into louver core leaving the corridor side of the frame free of fasteners.

Operation: Adjustable blades of 16 gauge CRS pivot on cadmium-plated steel rivets. The blades are operated by a manual adjusting lever. A spring-loaded fusible link mechanism is incorporated into the design; upon melting of the link, the action bar is actuated, thereby closing and locking all of the blades.

Door: For- 1-3/4" steel or composite door. Door cutout = order size.

Fasteners: #8 x 3/4" Phillips flathead screws to match finish.

Optional Security Grille Available on Model 1900ASG



Model 1900A is rated for use in fire doors for up to 1-1/2 hours rating.

Fire door testing: CAN/ULC S104, NFPA252, UBC 7-2-94, UL10(b), UL10(c). Installed in accordance with NFPA-80. Louver size shall not exceed maximum width and height shall not be less than 10" and 6", respectively. Louvers may be provided for classified hollow metal type and composite type fire doors. Consult with the Local Authority Having Jurisdiction (AHJ) to determine appropriate standards. The louver frame will be labeled with a Listing mark.