Plenum Slots
Plenum Slot Manufacturers
Tuttle & Bailey
Featured Plenum Slots
Tuttle & Bailey - SVPS Single Vane Supply
The SVPS-NR single vane diffuser delivers precise air pattern control for narrow T-bar ceilings (9/16"), featuring a gasketed aluminum controller and galvanized steel construction for commercial applications.
Features
Ceiling Compatibility
Designed for 5/16″ drop narrow tee systems with optional plaster frames.
Airflow Modulation
180° adjustable single vane with gasketed tip for tight ceiling patterns.
Durable Build
24-gauge galvanized steel with drawn neck to prevent air leakage.
Specifications
Slot Options
3/4″, 1″, or 1-1/2″ widths with 1-4 slots per unit.
Lengths
24″ (1 blade/slot) or 48″ (2 blades/slot).
Accessories
Earthquake tabs (ET), inlet dampers (ID), and 1/4″ fiberglass insulation.
Warranty
Documents
Tuttle & Bailey - APPSF Adjustable Pattern, Factory Mounted Blades
The APPSF plenum slot diffuser combines aerodynamic curved blades with steel construction for high-capacity airflow in VAV systems. Its factory-mounted, reversible blades allow horizontal or vertical air pattern adjustments while maintaining ultra-low noise levels (<20 NC) in sensitive environments like hospitals and libraries.
Features
Adaptive Airflow
Removable/reversible curved blades switch between horizontal (left/right) and vertical patterns without tools.
Acoustic Design
1/4″ fiberglass-insulated plenum (excluding end caps) reduces sound transmission to 20 NC.
Seismic Compliance
Includes earthquake tabs (ET) and optional 11″ deep plenum for high-risk zones.
Specifications
Construction
Steel body with aluminum pattern controls and Flat Black (BL) finish.
Options
1-2 slots @ 1″ or 1.5″ widths; 24″-60″ lengths; optional white tees.
Installation
Lay-in T-bar ceiling compatible with plaster frame (PF) for drywall.
Warranty
Documents
Tuttle & Bailey - FVPS Fixed Vane Supply
Fixed vane supply grilles typically feature non-adjustable blades for consistent airflow patterns in commercial HVAC systems, often used where directional control isn't required.
Features
Specifications
Warranty
Documents
Tuttle & Bailey - HISR Plenum Slot, Supply and Return, High Induction, Steel
A dual-function plenum slot system combining high-induction supply airflow with integrated return capabilities in heavy-duty steel construction for commercial HVAC applications.
Features
Dual Airflow Path
Simultaneous supply (vertical discharge) and return (horizontal intake) operation.
Induction Technology
4:1 room air induction ratio reduces temperature differential to ≤5°F at 6′ level.
Structural Design
18ga galvanized steel with reinforced mullions every 4′.
Specifications
Slot Options
1-4 slots (1″ or 1.5″ width) in 2′ increments up to 16′ lengths.
Performance
200-1,800 CFM/lf at NC ≤25 (ANSI/ASHRAE 70-2006 tested).
Accessories
Field-installable dampers, splices, and custom end caps.
Warranty
Documents
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