12 inch duct
[DOC File]SECTION 15820 - DUCT ACCESSORIES
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Differential Pressure Rating: 5 in.wg. (1.2 kPa) at a 12 inch (305) blade length. Construction: Frame: Hat-shaped channel, roll formed galvanized steel with interlocking gusseted corners. Structurally equivalent to 13 gauge (2.3mm) U-channel type frame. Low profile head and …
[DOC File]Section 23 31 00 - HVAC DUCTS AND CASINGS
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B. Openings shall be as large as feasible in small ducts, 300mm by 300mm (12 inch by 12 inch) minimum where possible. Access sections in insulated ducts shall be double-wall, insulated. 1. Refer to SMACNA HVAC Duct Construction Standards. 2.5 FIRE DAMPERS
[DOCX File]ARCAT | Free Building Product CAD Details, BIM, Specs and …
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Place 1/2 inch (12.7 mm) ceramic fiber or unfaced FyreWrap blanket gasket between duct and access door cover. Install cover over rods. ** NOTE TO SPECIFIER ** Specify a minimum of 4 pins for ducts with single layer insulation, and a minimum of 5 pins for ducts with a double layer of insulation.
[DOC File]PART 1 - browardschools
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When applicable, the wall opening for a duct penetration through a fire rated wall where a fire damper is not required shall be provided with a 12 inch long by 0.06 inch thick steel sleeve secured to both sides of the wall with steel retaining angles and the annular space between the steel sleeve and the wall opening shall be filled with ...
[DOCX File]SECTION 23 33 00
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DUCT ACCESS DOORS. Fabrication: Rigid and closefitting of galvanized steel with sealing gaskets and quick fastening locking devices. For insulated ductwork, install minimum one inch thick insulation with sheet metal cover. Less Than 12 Inches Square: Secure with sash locks. Up to 18 Inches Square: Provide two hinges and two sash locks.
SECTION 235216 - CONDENSING BOILERS
The minimum ducted combustion air duct size for each boiler is six inch (BMK750 - 1500), 8 inch (BMK2000 - 3000), 10 inch (BMK4000-5000N) diameter or 12 inch (BMK5000 and 6000) diameter. Common vent and common combustion air must be an available option for boiler installation.
[DOCX File]23 31 00 - DOA Home
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Removable caps may be installed at termination ends on ducts less than 12 inch in diameter. CLEANING Remove all dirt and foreign matter from the entire duct system and clean diffusers, registers, grilles and the inside of air-handling units before operating fans.
[DOC File]SECTION 260543 - UNDERGROUND DUCTS AND RACEWAYS …
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Warning Planks: Bury warning planks approximately 12 inches above direct-buried ducts and duct banks, placing them 24 inches o.c. Align planks along the width and along the centerline of duct bank. Provide an additional plank for each 12-inch increment of duct-bank width over a nominal 18 inches. Space additional planks 12 inches apart ...
[DOC File]SECTION 233300 - AIR DUCT ACCESSORIES
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Dial Regulator: Concealed or exposed duct in unfinished spaces, blade lengths 18-inch and less, 3/8-inch, Ventlock 635 or 638 for insulated duct. For blade lengths 19 inches and more, similar except 1/2-inch shafts. Dial Regulator: Exposed duct finished space, 3/8-inch, Ventlock 640.
[DOCX File]Section 23 31 00 - HVAC DUCTS AND CASINGS
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B.Openings shall be as large as feasible in small ducts, 300 mm by 300 mm (12 inch by 12 inch) minimum where possible. Access sections in insulated ducts shall be doublewall, insulated. Transparent shatterproof covers are preferred for uninsulated ducts. 1.For rectangular ducts: Refer to SMACNA HVAC Duct Construction Standards (Figure 212).
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