Extruded Aluminum Model "EX" Vent
Long Specifications

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  We manufacturer several types of aluminum louvered wall vents for ventilating crawl spaces or crawlspaces, ceiling plenums, chimney flues, foundations, pipe spaces, and other conditions.  These vents are typically installed in masonry walls and include crawl space vents or crawlspace vents.  Both extruded and cast aluminum vents are provided.  Accessories include insect screens, ducts, dampers, and inside registers.

This guide specification section can be used to specify Model EX, an extruded aluminum wall vent.  Model FL, a flanged extruded aluminum wall vent can be specified with SECTION 10236 - EXTRUDED ALUMINUM FLANGED WALL VENTS.  Cast aluminum wall vents, Model C, can be specified with SECTION 10237 - CAST ALUMINUM WALL VENTS.

The specifier will need to edit this product specification for a specific project to reflect the options and applications being used.  The guide section has been written so that most editing can be accomplished by deleting unnecessary requirements.  Options are indicated by [   ].  Notes to assist the specifier in selecting options and editing the specification guide are printed in bold and indicated with.  For final editing, all brackets and notes will need to be deleted from the guide.

PART 1 - GENERAL

1.1 SUMMARY

  Edit the following paragraph to reflect project conditions. 

A. Section includes:  Aluminum wall vents with fixed louvers, [adjustable damper,] [duct extension] [inside register] and insect screens for installation in [masonry] [concrete] [_____] walls to provide ventilation for [crawl spaces] [ceiling plenums] [chimney flues] [foundations] [pipe spaces] [_____].

B. Related sections:

1. Section 03300 - Cast-in-Place Concrete:  Concrete walls to receive extruded aluminum vents.

2. Section 04800 - Masonry Assemblies:  [Clay brick] [Concrete unit] masonry walls to receive extruded aluminum vents.

  List by number and full title reference standards referred to in remainder of specification section.  Delete non-applicable references. 

A. American Architectural Manufacturers Association (AAMA):

1. AAMA 605.2 - Voluntary Specification for High Performance Organic Coatings on Architectural Extrusions and Panels.

2. AAMA 606.1 - Voluntary Guide Specification and Inspection Methods for Integral Color Anodic Finishes for Architectural Aluminum.

3. AAMA 607.1 - Voluntary Guide Specification and Inspection Methods for Clear Anodic Finishes for Architectural Aluminum.

B. American Society for Testing and Materials (ASTM) Publications:

1. ASTM B209 - Aluminum and Aluminum-Alloy Sheet and Plate.

2. ASTM B221 - Aluminum-Alloy Extruded Bar, Rod, Wire, Shape, and Tube.

A. Provide in accordance with Section 01330 - Submittal Procedures:

1. Product data for wall vents.

2. Shop drawings showing construction, dimensions, and installation details.

3. Sample of finish.

2.1 ACCEPTABLE MANUFACTURERS

A. Manufacturers of equivalent products submitted and approved in accordance with Section 01630 - Product Substitution Procedures.

A. Extruded aluminum:  [0.125 inch] [3 mm] minimum thickness extruded aluminum complying with ASTM B221, Alloy 6063, Temper T-5.

B. Sheet aluminum:  [0.063 inch] [16 mm] minimum thickness sheet aluminum sheet complying with ASTM B209 6063, Temper T-6.

C. Fasteners:  Type, size, and spacing as recommended by vent manufacturer for project conditions.

D. Sealant:  Type as [specified in Section 07900 - Joint Sealers.] [recommended by vent manufacturer.]

A. Type:  Extruded aluminum wall vent with insect screen [opposed blade adjustable damper] [duct extension] [and] [inside register]; Model EX.

B. Nominal size:  [4 inches] [102 mm] deep by [_____] [inches] [mm] wide by [_____] [inches] [mm] high.

C. Construction:  Framed vent without flanges and with overlapping horizontal louver blades fabricated from extruded aluminum sections.

1. Louver blades:  Fixed, horizontal blades [1 inch] [25 mm] deep set at 45 degrees at [1 inch] [25 mm] on center.  Top of blade formed with storm drip.

2. Top frame:  Extruded member with mortar ribs and front drip edge.

3. Bottom frame:  Extruded member with mortar ribs, back water stop, and front drip edge.

4. Connections:  Fabricate vents with mechanical connections such that all fasteners are concealed when vent is installed.

D. Insect screen:  18 by 14 mesh aluminum screen set behind louvers in extruded stop on frame.

Model EX vents can be equipped with opposed blade damper.  Include this paragraph if dampers are required.

A. Dampers:  Equip wall vents with opposed vertical blade damper set behind horizontal fixed louver blades and operable from exterior with screwdriver.  Provide cutout in bottom louver blade for screwdriver adjustment of damper.

B. Duct extension:  Provide wall vents with straight, rectangular duct extension to attach to vent and extend through wall.

1. Fabricate from sheet aluminum and securely attach to vent with fasteners of type, size, and spacing as recommended by manufacturer.

2. Size:  Width and height to accommodate vent size by [[_____] [inches] [mm]] long.] [length required to penetrate wall.] [length indicated on Drawings and approved shop drawings.]

C. Inside registers:  Provide wall vents with inside register to be field attached to [duct extensions] [inside face of wall].

1. Type:  Aluminum register with individual adjustable vanes and multi-blade damper.

2. Size:  Width and height to accommodate vent size.

  Standard finish for extruded aluminum wall vents is a clear anodized finish.  As an option, medium and dark bronze anodized, thermoset (baked enamel), and Kynar finishes are available. 

A. Wall vent finish:  Factory applied [clear anodized coating complying with AAMA 607.1 - MM10C22A31.]  [[medium] [dark] bronze anodized coating complying with AAMA 606.1 - MM10C22A44.]  [fluoropolymer Kynar colored paint coating complying with AAMA 605.2.] [thermoset polyester enamel.]

B. Color:  [_____] [As selected by Architect from manufacturer's standard range] [Custom color as designated by Architect].

C. Duct extension finish:  Mill finished aluminum.

PART 3 - EXECUTION

3.1 COORDINATION

  Depending on size, some extruded aluminum wall vents are load bearing.  Other sizes may require supplementary framing or lintels.  Contact Industries for loading bearing capacities of extruded vents. 

A. Coordinate supply of vents with construction of walls to ensure proper sizing and placement of vent openings.  [Ensure that adequate framing and lintels are installed in accordance with [Section 05100 - Structural Metal Framing] [_____].

B. Coordinate provision of wall vents with construction of masonry walls.  Deliver vents to site in time to allow building into masonry wall and to avoid delays.

A. Install vents, [dampers,] [duct extensions,] [and] [inside registers] in accordance with manufacturer's installation instructions and approved shop drawings.

B. Do not installed bent, scratched, or otherwise damaged vents.  Remove damaged components from site and replace.

C. Install vents secure, level, plumb, and flush with wall surface.

D. Build vents into wall with mortar as part of masonry construction specified in Section [04800 - Masonry Assemblies] [_____].

E. Exercise care that wet mortar is not splashed onto aluminum vent during installation.

F. For vents greater than [30 inches] [762 mm] wide:  Do not mortar jambs.  Install with sealant and backer rod [as specified in Section 07900 - Joint Sealers].

G. Install vents in wall openings after walls are constructed in accordance with Drawing details and approved shop drawings.

1. Secure vents with clips attached to rear of vent and anchored to perimeter of wall opening.

2. Seal around entire perimeter of vent with sealant and backer rod [as specified in Section 07900 - Joint Sealers].

A. Exercise care in removing mortar and cementitious materials from aluminum vents in order to avoid scratching.  Splashed mortar or cement plaster shall be cleaned from vent with dry burlap wipe.  Remove after material becomes hard enough not to smear but prior to set.

B. Remove excess sealant by moderate use of mineral spirits or other solvent acceptable to sealant manufacturer.

C. Wash exposed surfaces with solution of mild detergent applied with soft cloth.  Take care to remove dirt from corners.  Wipe surfaces clean.