Air Balance Update!

Weve updated our website with some new features to improve your experience.

Take a look at our latest features on the Whats New summary page. This page is always avaliable from the About menu in the main nav.

Home
Products
Literature
Sales Locator
Contact
About
Tools

Products

Home
Products

Choose a category to filter by

Product Filters

Product Type

Filters Product Type

Construction

Filters Construction

Certification

Filters Certification

Performance

Filters Performance

Product Type Filters

Life Safety (UL Rated) 97

Dynamic Fire Dampers 22

Fire-Smoke Dampers 39

Smoke Dampers 18

Static Fire Dampers 13

Non-UL Dampers 63

Control Dampers 31

Balancing Dampers 7

Backdraft Dampers 13

Round Dampers 16

Industrial Dampers 13

Multi Zone Dampers 3

Louvers 121

Stationary Louvers 53

Severe Weather Louvers 25

Adjustable / Combination Louvers 27

Acoustical Louvers 8

Brick Vents 2

Doors 36

Aluminum Plenum Access Doors 18

Steel Plenum Access Doors 6

Duct Access Doors 12

Access Doors 36

Rooftop 17

Penthouses 8

Sunshades / Vision Screens 9

Construction Filters

Materials

Extruded Aluminum 6063 Alloy 22
Rolled Aluminum 1
Structural Aluminum 1

304 Stainless Steel 1
316 Stainless Steel 1
Fabricated Steel 0
Galvaneal (When Finish / Field Painting Is Required) 1
Galvanized Steel 1
Hot Rolled Steel 1
Structural Steel 1

General Construction

General Construction Properties

Insulation

Louver/Damper Construction

Blade Construction Properties

Blade Type

Drainable Blade

Blade Movement

Blade Action

Blade Depth

in.

in.

4 in. 8 in.

Blade Angle

deg.

deg.

0 deg. 45 deg.

Single Panel Size

Min Size Width

in.

3.75 in. 44 in.

Max Single Panel Width

in.

14 in. 60 in.

Min Size Height

in.

3 in. 44 in.

Max Single Panel Height

in.

10 in. 96 in.

Min Size Diameter

in.

4 in. 11.75 in.

Max Single Panel Diameter

in.

11 in. 34 in.

Mount Orientation

Horizontal

Vertical

Horizontal or Vertical

Frame Construction Properties

Frame Depth:

in.

in.

0.465 in. 18 in.

Frame Shape

Frame Style

Frame Type

UL / Life Safety Construction

Actuator Closure Type

Certifications Filters

Certifications and Ratings

Life Safety Standards

Underwriters Laboratories, Inc.: 555 63
National Fire Protection Association: 80 & 90A 80
Underwriters Laboratories, Inc.: 555S 57
Underwriters Laboratories, Inc.: 555C 5

UL Temperature

UL Temperature Rating: 250° 50
UL Temperature Rating: 350° 38
UL Temperature Rating: 250°/350° 45

For Airflow

AMCA Rating (Air Leakage) 2
AMCA Rating (Air Performance) 81

UL Fire Rating

UL Fire Resistance Rating: 1.5 Hours 48
UL Fire Resistance Rating: 3 Hours 26

UL Leakage Rating

UL Leakage Rating: Class I 26
UL Leakage Rating: Class II 31

For Rainfall Protection

AMCA Rating (Water Penetration) 33
AMCA Rating (Wind Driven Rain) 17

For Hurricane Protection

Miami-Dade Approved 4
AMCA Rating 540 (Missile Impact) 5
AMCA Rating 550 (High Velocity WDR) 6

Other Certifications

ICC's International Building Code 78

Performance Filters

Airflow Performance

All Airflow Properties

Max Velocity:

fpm
to

fpm

1000 fpm 10000 fpm
Pressure Drop:

in. w.g.
to

in. w.g.

0.012 in w.g. @ 1000 fpm 0.7 in w.g. @ 1000 fpm
Begining Point of Water Penetration (fpm):

fpm
to

fpm

459 fpm 1250 fpm
Begining Point of Water Penetration (cfm):

cfm
to

cfm

3383 cfm 11550 cfm
Free Area:

%
to

%

24.88% 72.6%
Max Static Pressure

in. w.g.
1 in. w.g. 20 in. w.g.

Group Products

Product Type

Construction

Certification

Performance

Filters Applied

Clear All Product Type: Severe Weather Louvers

Page 1 of 2 (25 Results, 25 Groups)

12 Per Page 24 Per Page 60 Per Page 120 Per Page

A531

5" Deep Extruded Aluminum Horizontal Combination Drain Blade, "Wind Driven Rain Resistant" Louver

New

A531

Free Area %: 43%
Pressure Drop: .47 in. w.g. @ 1000 fpm
Water Penetration (fpm): 821 (fpm)

1 in Group Compare

A631

6" Deep Extruded Aluminum Combo Stationary Severe Weather Louver

New

A631

Free Area %: 43.4%
Pressure Drop: .17 in. w.g. @ 1000 fpm

1 in Group Compare

A724

7" Deep Horizontal Chevron Drainable Blade Wind Driven Rain and Impact Resistant Louver

New

A724

Free Area %: 42.4%
Pressure Drop: .022 in. w.g. @ 398 fpm
Water Penetration (fpm): 1250 (fpm)

1 in Group Compare

A200

2" Deep Horizontal Drainable Chevron Blades Wind Driven Rain

A258

Free Area %: 43.3%
Pressure Drop: .38 in. w.g. @ 1000 fpm

1 in Group Compare

A320

6” Fixed Deep Drainable Blade Hurricane Louver (Miami-Dade Certified)

A320

Free Area %: 58%
Pressure Drop: .14 in. w.g. @ 1000 fpm
Water Penetration (fpm): 1250 (fpm)

1 in Group Compare

A320C

6" Deep Adjustable Blade Hurricane Louver (Miami-Dade Certified)

A320C

Free Area %: 51%
Pressure Drop: .1 in. w.g. @ 1000 fpm
Water Penetration (fpm): 1250 (fpm)

Some Items Currently Unavaliable

1 in Group Compare

A328

3" Deep Extruded Aluminum Vertical Chevron Blade Rain Resistant Storm Louver

A328

Free Area %: 44%
Pressure Drop: .083 in. w.g. @ 1000 fpm

1 in Group Compare

A490

4" Deep Horizontal Chevron Drainable Blade Wind Driven Rain Resistant Louver

A490

Free Area %: 47%
Pressure Drop: .26 in. w.g. @ 1000 fpm

1 in Group Compare

A491

4" Deep Vertical Chevron Drainable Blade Wind Driven Rain Resistant Louver

A491

Free Area %: 47%
Pressure Drop: .26 in. w.g. @ 1000 fpm

1 in Group Compare

A520

5" Deep, Fixed Chevron Drainable Blade, Hurricane Louver (Miami-Dade Certified)

A520

Free Area %: 44.3%
Pressure Drop: .31 in. w.g. @ 1250 fpm
Water Penetration (fpm): 1250 (fpm)

1 in Group Compare

A590

5" Deep Drainable Chevron Blade Wind Driven Rain Resistant Sightproof Louver

A590

Free Area %: 44.3%
Pressure Drop: .32 in. w.g. @ 1000 fpm
Water Penetration (fpm): 1250 (fpm)

1 in Group Compare

A591

5" Deep Vertical Chevron Drainable Blade Wind Driven Rain Resistant Sightproof Louver

A591

Free Area %: 46.1%
Pressure Drop: .22 in. w.g. @ 1000 fpm

1 in Group Compare

A624

6" Deep Extruded Aluminum Vertical Chevron Blade Rain Resistant Storm Louver

A624

Free Area %: 53%
Pressure Drop: .103 in. w.g. @ 1000 fpm
Water Penetration (fpm): 1250 (fpm)

1 in Group Compare

A662

6" Deep Extruded Aluminum Horizontal Chevron Blade Rain Resistant Storm Louver

A662

Free Area %: 51%
Pressure Drop: .1 in. w.g. @ 925 fpm
Water Penetration (fpm): 1250 (fpm)

1 in Group Compare

A675

6" Deep Drainable Combination Stationary Wind Driven Rain Resistant Storm Louver

A675

Free Area %: 44%
Pressure Drop: .16 in. w.g. @ 1000 fpm

1 in Group Compare

A680

6" Deep Vertical Fixed Chevron Blade Hurricane Louver

A680

Free Area %: 49.1%
Pressure Drop: .164 in. w.g. @ 1250 fpm

1 in Group Compare

A681C

6" Deep 35° Fixed Blade and Adjustable Blade Combination Louver

A681C

Free Area %: 52%
Pressure Drop: .145 in. w.g. @ 981 fpm
Water Penetration (fpm): 981 (fpm)

1 in Group Compare

A725

7" Deep Horizontal Chevron Drainable Blade Wind Driven Rain Resistant Louver

A725

Free Area %: 42.4%
Pressure Drop: .022 in. w.g. @ 400 fpm
Water Penetration (fpm): 1250 (fpm)

1 in Group Compare

A750

7" Deep Horizontal Chevron Drainable Blade Wind Driven Rain Resistant Louver

A750

Free Area %: 45.1%
Pressure Drop: .34 in. w.g. @ 1000 fpm
Water Penetration (fpm): 1187 (fpm)

Some Items Currently Unavaliable

1 in Group Compare

A800

8" Deep Extruded Aluminum Sand Louver

Free Area %: 27.56%
Pressure Drop: .65 in. w.g. @ 1250 fpm

Some Items Currently Unavaliable

1 in Group Compare

A820

8" Deep Fixed Vertical Chevron Blade Hurricane Louver (Miami-Dade Certified)

Free Area %: 29.31%
Pressure Drop: .3 in. w.g. @ 1250 fpm

Some Items Currently Unavaliable

1 in Group Compare

A850

8" Deep Chevron Drainable Blade Rain Resistant Louver

Free Area %: 56%
Pressure Drop: .48 in. w.g. @ 1000 fpm

Some Items Currently Unavaliable

1 in Group Compare

AL-AF5

5.5" Deep Aluminum FEMA Louver

ALAF5

Free Area %: 49.3%
Pressure Drop: .35 in. w.g. @ 1000 fpm

1 in Group Compare

FS-AF8

8" Deep Steel FEMA Louver

FSAF8, FSAF8

Free Area %: 53%
Pressure Drop: .3 in. w.g. @ 1000 fpm

1 in Group Compare

Page 1 of 2 (25 Results, 25 Groups)

1
2

1
2

Are you looking for a

Sales Representative?

Find your local sales office right now!

Recently Viewed

Air Balance builds dependable HVAC solutions, including AMCA-rated louvers, UL-classified dampers, and more. Take a balanced approach to HVAC and Life Safety.

Contact Us

450 Riverside Drive
Wyalusing, PA 18853
p : (570) 746-1888
f : (570) 746-9286
Contact

Useful links

Products
Rep Locator
Contact
Sales Assistant

Subscribe to our newsletter!

Never Miss Anything From Us By Signing Up To Our Newsletter.

Mestek, Inc. © Copyright 2026. All Rights Reserved. | Purchase Terms | Terms & Conditions | Terms of Use

Send Us Feedback