AVI-77

UL Classified
(UL 555)

3 Hour Rating

Dynamic for Use in Installations Rated Less Than 3 Hours

Standard Profile : (4¼”) 22 Ga Material- Standard

Galvanized Steel

Standard Profile : (4¼”) 22 Ga Material-Optional

Stainless Steel

Orientation

Vertical or Horizontal Installations

Fusible Standard
Rated Link

165°

Fusible Optional
Rated Link

212°

22 Ga Sleeve
Standard

12″

22 Ga Sleeve
Optional

8″, 17″, 20″ or 24″ Lenghts

Type C:

Round, Oval or Rectangular Collars

  • AVI-77 Type A

    Blades : Blades in Air-Stream
    Vertical Sizes :
    4” x 4” to 36” x 36”
    Horizontal Sizes :
    4” x 4” to 24” x 24”
    Airflow Pressure Ratings
    Vertical: 36" x 36" = 2,000 FPM at 4"W.G.
    Horizontal: 24" x 24" = 2,000 FPM at 4"W.G.
    Horizontal: 12" x 12" = 3,000 FPM at 4"W.G.
  • AVI-77 Type B

    Blades : Blades Out of Air-Stream
    Vertical Sizes :
    4” x 3” to 36” x 32”
    Horizontal Sizes :
    4” x 3” to 24” x 21”
    Airflow Pressure Ratings
    Vertical: 24" x 20" = 2,000 FPM at 4"W.G.
    Horizontal: 24" x 20" = 3,000 FPM at 4"W.G.
    Horizontal: 12" x 19" = 3,000 FPM at 4"W.G.
  • AVI-77 Type C

    Blades : Blades and Frame Out of Air-Stream 100% Free Area
    Vertical Sizes :
    4" to 31"
    Oval and Rectangular
    6" x 6" to 34" x 31"
    Horizontal Sizes :
    4" to 20"
    Oval and Rectangular
    6" x 6" to 22" x 20"