1900A Fire-Rated, Adjustable Z-Blade Louver-24"W x 18"H-Brass

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 prepared frame into louver core leaving corridor side of 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