return registers shall have a single set of nondirectional face bars or
vanes having the same appearance as the supply registers.] [Set face bars
or vanes at [____] degrees.]
2.6.5.7
Security Supply Air Registers Except in Cells
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NOTE: Use this paragraph for brig facilities only.
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Supply air registers, except in prisoner cells and prisoner holding cells,
shall be steel with individually adjustable horizontal and vertical vanes,
perforated faceplate, flat surface margin and opposed blade damper.
Vertical vanes shall be in front; vane spacing shall be 20 mm 3/4 inch o.c.
Perforated faceplate shall be 14 gage (minimum) with 13 by 13 mm holes on
5 mm 1/2 by 1/2 inch holes on 3/16 inch spacing and a minimum free area of
45 percent.
2.6.5.8
Security Return and Other Air Registers Except in Cells
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NOTE: Use this paragraph for brig facilities only.
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Return, exhaust, transfer and relief air registers, except in prisoner
cells and prisoner holding cells shall be steel with perforated faceplate,
flat surface margin, opposed blade damper, and duct mounting sleeve.
Faceplate shall be 14 gage (minimum) with 13 by 13 mm holes on 5 mm 1/2 by
1/2 inch holes on 3/16 inch spacing and a minimum free area of 45 percent.
2.6.5.9
Security Supply Air Registers in Cells
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NOTE: Use this paragraph for brig facilities only.
**************************************************************************
Supply air registers in prisoner cells and prisoner holding cells shall be
steel with perforated faceplate, flat surface margin, extension sleeve,
opposed blade damper, and back mounting flanges. Faceplate shall be 14
gage (minimum) with 13 by 13 mm holes on 5 mm 1/2 by 1/2 inch holes on 3/16
inch spacing and a minimum free area of 45 percent. Wall sleeve shall be
14 gage (minimum).
2.6.5.10
Security Return and Other Type Air Registers in Cells
**************************************************************************
NOTE: Use this paragraph for brig facilities only.
**************************************************************************
Return, exhaust, transfer and relief air registers in prisoner cells and
prisoner holding cells shall be steel with perforated faceplate, flat
surface margin, wall sleeve, opposed blade damper, and back mounting
flanges. Faceplate shall be 14 gage (minimum) with 13 by 13 mm holes on 5
mm 1/2 by 1/2 inch holes on 3/16 inch spacing and a minimum free area of 45
percent. Wall sleeve shall be 14 gage (minimum).
2.6.6
Louvers
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SECTION 15895
Page 25
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