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904 Series Performance Data
904 - Double Deflection Adjustable Aluminum Blade Grille For a 30" x 14" Duct Opening(front blades parallel to shortest dimension)
450 Series Submittal
Available in even sizes 6" to 20" and 24"
Louvers designed with rolled rib for maximum strength and rigidity
Floor Register 1550-8X20 Finish:Designer Color - Coffee Tan 904 Series Performance DataStandard Features Fixed bars with 0 deflection Heavy duty steel honeycomb construction Flush core and frame provides smooth surface Free area equals more than 75% of nominal size Blades run parallel to longest dimension Recessed screwdriver operated opposed blade damper to control air volume for positive balance of system Rust resistant pre coat with durable powder finish Driftwood Tan Options Reinforced welded core and extra supports for heavy duty
![Variant: Sequential Sleep [ver1.2] - COMPACT DISCS bicep](https://cdn.shopify.com/s/files/1/2976/0132/files/3435988.jpg?v=1747776213)
