• Products and Solutions
    • Grilles & Registers
      • Supply, Steel
      • Supply, Aluminum
      • Return, Steel
      • Return, Aluminum
      • Curved Blade, Aluminum (1, 2, 3 or 4-way)
      • Heavy Duty, Steel, Supply
      • Heavy Duty, Steel, Return
      • Grid Core Return
      • Transfer and Door Grilles
      • Perforated Return Grilles
      • AVF Versaflex
      • G-Series
      • Return Filter Grilles
      • Supply Aluminum, Aerovane
      • Grid Core Return 45-Degree Deflection
    • Square/Round Diffusers
      • Stepdown 3-Cone
      • Stepdown 2-Cone
      • Architectural Plaque Diffuser
      • M-Series Louvered Face-Square Neck
      • Agitair® RC Series
      • Modular Core Diffuser
      • Concentric Supply Return
      • Round Diffuser, 3-Cone
      • Round Diffuser, 4-Cone
      • Industrial Round Diffuser
      • Fire Rated Series
      • Architectural Swirl Face
      • M-Series Louvered Face-Round Neck
      • Round Architectural Plaque Diffuser
    • Perforated Diffusers
      • Supply, Adjustable Curved Blade
      • Supply Face Mounted Deflectors
      • Supply, Modular Core
      • Return, Perf Panel Only
      • Return Diffuser
    • Linear/Slot Diffusers
      • 4000 Series Linear Grilles
      • Agitair® Stripline® Diffusers
      • 6000 Series Slot Diffusers
      • AIR-TRAC Architectural Linear Diffuser
    • Plenum Slots
      • Supply, Single Vane
      • Supply, Modulinear
      • High Capacity Plenum Slot
      • Return Slot Diffuser
      • High Induction Series
      • Supply, Fixed Vane
    • Security Grilles
      • Perforated Supply
      • Transfer Grille, Perforated Pattern
      • Louvered Face Diffuser With Lattice Face Plate
      • Bar Grille, Steel
      • Bar Grille, Aluminum
      • Lattice Face Plate, Steel
      • Lattice Face Plate, Aluminum
      • Security Duct Bars With Sleeve
      • Security Duct Bars With Frame
      • Suicide Deterrent Security Grille
      • Maximum Security Lattice Face With Mesh Screen
    • Critical Environment
      • Radial Flow, Fixed
      • Radial Flow, Adjustable
      • OR Linear Curtain, V-Slot
      • Laminar Flow, Tensor™
      • ISOTEK
      • Laminar Terminal Diffusers, LTD
    • Specialty Products
      • Stainless Steel Supply Grilles
      • Stainless Steel Return Grilles
      • Industrial Supply Grilles, Pole-Operated Blades
      • GJ Jet-Flo®
      • Roto-Jet® Drum Grilles
      • Electronically Controlled VAV Diffuser
      • Roto-Jet® Spiral Duct Drum Grilles
      • Discus Series Spot Diffusers
      • Discus Series Supply Grilles
      • Discus Series Air Foil Round Supply Grilles
      • Discus Series Industrial Round Supply Grilles
      • Thermal VAV Diffusers
      • Heavy Duty Airfoil Grilles
      • Constant Flow Regulator
      • Spiral Duct Series
    • Underfloor Products
      • UnderFloor Rounds
    • Accessories
      • Round Dampers
      • Grids, Extractors, Turning Vanes
      • Square to Round Adapters
      • Adapter Plaster Frames
      • HEPA Air Filter
      • Plaster Frame
      • Square/Rectangular Dampers, Steel
      • Square/Rectangular Dampers, Aluminum
      • Return Hood
    • Air Handling Coils
      • Air Handling Coils
    • Terminal Units
      • Single Duct Terminal Unit
      • Dual Duct Terminal Unit
      • Single Duct Round Terminal Unit
      • Dual Single Duct Terminal Unit
      • Laboratory Exhaust Valve
      • Bypass Terminal Unit
      • Low Profile Fan Powered Constant Terminal Unit
      • Low Profile Fan Powered Variable Terminal Unit
      • Fan Powered Series Terminal Unit
      • Fan Powered Parallel Terminal Unit
    • Displacement Diffusers
      • Semi-circular, 180°
      • Rectangular, Flush Mount
      • Rectangular, Stair Riser or Surface Mount
      • Curved, Corner Mount
      • Rectangular, Flush or Wall Mount
      • Semi-Circular, Wall or Surface Mount
      • Circular, 360°
  • Services and Support
    • Training
    • Webinars
    • GRD Products Webinars
  • Resources
    • Engineering Resources
    • Installation Manuals
    • Revit
    • Product Catalog
    • Installation Videos
  • Insights
  • Find a Rep
Rep Login
  • Products and Solutions
    • Grilles & Registers
      • Supply, Steel
      • Supply, Aluminum
      • Return, Steel
      • Return, Aluminum
      • Curved Blade, Aluminum (1, 2, 3 or 4-way)
      • Heavy Duty, Steel, Supply
      • Heavy Duty, Steel, Return
      • Grid Core Return
      • Transfer and Door Grilles
      • Perforated Return Grilles
      • AVF Versaflex
      • G-Series
      • Return Filter Grilles
      • Supply Aluminum, Aerovane
      • Grid Core Return 45-Degree Deflection
    • Square/Round Diffusers
      • Stepdown 3-Cone
      • Stepdown 2-Cone
      • Architectural Plaque Diffuser
      • M-Series Louvered Face-Square Neck
      • Agitair® RC Series
      • Modular Core Diffuser
      • Concentric Supply Return
      • Round Diffuser, 3-Cone
      • Round Diffuser, 4-Cone
      • Industrial Round Diffuser
      • Fire Rated Series
      • Architectural Swirl Face
      • M-Series Louvered Face-Round Neck
      • Round Architectural Plaque Diffuser
    • Perforated Diffusers
      • Supply, Adjustable Curved Blade
      • Supply Face Mounted Deflectors
      • Supply, Modular Core
      • Return, Perf Panel Only
      • Return Diffuser
    • Linear/Slot Diffusers
      • 4000 Series Linear Grilles
      • Agitair® Stripline® Diffusers
      • 6000 Series Slot Diffusers
      • AIR-TRAC Architectural Linear Diffuser
    • Plenum Slots
      • Supply, Single Vane
      • Supply, Modulinear
      • High Capacity Plenum Slot
      • Return Slot Diffuser
      • High Induction Series
      • Supply, Fixed Vane
    • Security Grilles
      • Perforated Supply
      • Transfer Grille, Perforated Pattern
      • Louvered Face Diffuser With Lattice Face Plate
      • Bar Grille, Steel
      • Bar Grille, Aluminum
      • Lattice Face Plate, Steel
      • Lattice Face Plate, Aluminum
      • Security Duct Bars With Sleeve
      • Security Duct Bars With Frame
      • Suicide Deterrent Security Grille
      • Maximum Security Lattice Face With Mesh Screen
    • Critical Environment
      • Radial Flow, Fixed
      • Radial Flow, Adjustable
      • OR Linear Curtain, V-Slot
      • Laminar Flow, Tensor™
      • ISOTEK
      • Laminar Terminal Diffusers, LTD
    • Specialty Products
      • Stainless Steel Supply Grilles
      • Stainless Steel Return Grilles
      • Industrial Supply Grilles, Pole-Operated Blades
      • GJ Jet-Flo®
      • Roto-Jet® Drum Grilles
      • Electronically Controlled VAV Diffuser
      • Roto-Jet® Spiral Duct Drum Grilles
      • Discus Series Spot Diffusers
      • Discus Series Supply Grilles
      • Discus Series Air Foil Round Supply Grilles
      • Discus Series Industrial Round Supply Grilles
      • Thermal VAV Diffusers
      • Heavy Duty Airfoil Grilles
      • Constant Flow Regulator
      • Spiral Duct Series
    • Underfloor Products
      • UnderFloor Rounds
    • Accessories
      • Round Dampers
      • Grids, Extractors, Turning Vanes
      • Square to Round Adapters
      • Adapter Plaster Frames
      • HEPA Air Filter
      • Plaster Frame
      • Square/Rectangular Dampers, Steel
      • Square/Rectangular Dampers, Aluminum
      • Return Hood
    • Air Handling Coils
      • Air Handling Coils
    • Terminal Units
      • Single Duct Terminal Unit
      • Dual Duct Terminal Unit
      • Single Duct Round Terminal Unit
      • Dual Single Duct Terminal Unit
      • Laboratory Exhaust Valve
      • Bypass Terminal Unit
      • Low Profile Fan Powered Constant Terminal Unit
      • Low Profile Fan Powered Variable Terminal Unit
      • Fan Powered Series Terminal Unit
      • Fan Powered Parallel Terminal Unit
    • Displacement Diffusers
      • Semi-circular, 180°
      • Rectangular, Flush Mount
      • Rectangular, Stair Riser or Surface Mount
      • Curved, Corner Mount
      • Rectangular, Flush or Wall Mount
      • Semi-Circular, Wall or Surface Mount
      • Circular, 360°
  • Services and Support
    • Training
    • Webinars
    • GRD Products Webinars
  • Resources
    • Engineering Resources
    • Installation Manuals
    • Revit
    • Product Catalog
    • Installation Videos
  • Insights
  • Find a Rep
Search
Search Rep Login
  1. Home
  2. Products and Solutions
  3. Plenum Slots
  4. High Capacity Plenum Slot
  5. APPS Adjustable Pattern, Loose Blades
Product Image_APPSF.jpg
  • Thumb Image_APPSF.jpg

APPS Adjustable Pattern, Loose Blades

Plenum Slots

With sturdy steel construction, APPS diffusers achieve tight ceiling patterns and consistent horizontal flow. These diffusers have a curved blade pattern controller with an aerodynamic design allowing the regulation of large volumes of air with minimum noise.

  • Blades are shipped loose for easy installation in the field
  • Features a steel construction with aluminum pattern controls
  • Available in Black (BL) finish on exposed surfaces
Back to Top

APPS Adjustable Pattern, Loose Blades

  • Product Application
  • Features
  • Benefits
  • Product Documentation
  • Related Products

    Product Application

    The mark of a good diffuser is to provide optimum performance without the unwanted noise. This is especially important in buildings like hospitals, university classrooms, study halls and libraries, which are often quiet places. Our APPS models are perfect for such facilities as they are capable of handling the constant change in room temperature with no discernable sound.
    Product Application

    Features

    • 8” plenum height (standard), with 11” optional height available
    • Available in 1 and 2 slots, and 1” or 1-1/2” slot widths
    • 24” length has 1 blade per slot; 36”, 48”, and 60” lengths have 2 blades per slot
    • Designed for standard lay-in T-bar ceiling systems
    • Inlet damper (ID) is shipped loose for field installation
    • Comes with earthquake tabs (ET)
    • Standard nominal lengths: 24”, 36”, 48” and 60”
    • Available lengths: 24”, 36”, 48” and 60”
    • The manufacturer shall provide published performance data tested in accordance with ANSI/ASHRAE Standard 70-1991 at isothermal conditions
    • Plaster frame (PF) for sheetrock and plaster ceilings
    • Mounting tabs (MO, MB) available
    • Features 1/4” fiberglass internal insulation along the length of the plenum (endcaps not insulated)

    Benefits

    Sturdy Construction
    Sturdy Construction

    Features a durable steel construction provides longevity and ensures years of dependability.

    Minimum Leakage
    Minimum Leakage

    The diffuser is designed with a drawn neck that prevents air leakage for optimum ventilation.

    Technical Resources

    Document Name
    Description
    Language
    Resource Type

    Data Sheet

    PS~APPS_FEA4_09 (English)

    High Capacity Plenum Slot - High Capacity, Adjustable APPS, APPSF - Features

    English Data Sheet
    VIEW

    Data Sheet

    PS~APPS_DIM4_09 (English)

    APPSF, APPS - Product Dimensions

    English Data Sheet
    VIEW

    Engineering Guide

    PS~APPS_ENG4_09 (English)

    APPSF, APPS - Engineering Data

    English Engineering Guide
    VIEW

    Specification Guide

    PS~APPS_SPC4_09 (English)

    High Capacity Plenum Slot - APPS, APPSF - Specifications

    English Specification Guide
    VIEW

    Submittal

    SD-1853 (English)

    Plenum Slots - APPS, APPSF Plenum Slot Diffuser Adjustable, High Capacity - Submittal

    English Submittal
    VIEW

    Submittal

    SD-1856 (English)

    Plenum Slots - SVPS, ITPS, APPS, PSDR Accessories - Submittal

    English Submittal
    VIEW

    Specification Guide

    APPS_APPSF (English)

    APPS, APPSF - Specifications Text File

    English Specification Guide
    VIEW

    Parts List

    PS~APPS_ACC4_09 (English)

    APPS, APPSF - Accessories

    English Parts List
    VIEW

    Revit File

    APPS (English)

    APPS - Revit File

    English Revit File
    VIEW
    No resource found for selected filter

    Back

    Next

    Related Products

    APPSF Adjustable Pattern, Factory Mounted Blades

    APPSF Adjustable Pattern, Factory Mounted Blades

    Contact Us
    Find a Rep
    • Grilles & Registers
    • Square/Round Diffusers
    • Perforated Diffusers
    • Linear/Slot Diffusers
    • Plenum Slots
    • Security Grilles
    • Critical Environment
    • Specialty Products
    • UnderFloor Products
    • Accessories
    • Air Handling Coils
    • Terminal Units
    • Displacement Diffusers
    Products and Solutions
    • Grilles & Registers
    • Square/Round Diffusers
    • Perforated Diffusers
    • Linear/Slot Diffusers
    • Plenum Slots
    • Security Grilles
    • Critical Environment
    • Specialty Products
    • UnderFloor Products
    • Accessories
    • Air Handling Coils
    • Terminal Units
    • Displacement Diffusers
    • Training
    • Webinars
    Services and Support
    • Training
    • Webinars
    • Engineering Resources
    • Installation Manuals
    • Revit
    • Product Catalog
    Resources
    • Engineering Resources
    • Installation Manuals
    • Revit
    • Product Catalog
    Connect With Us
    • Twitter X logo
    • Facebook logo
    • LinkedIn logo
    © 2025 Air Distribution Technologies, Inc..
    • Terms and Conditions of Sale
    • Privacy Notice
    • California Notice at Collection
    • Ethics
    • Terms of use
    • Purchase Terms