Skip to navigation
421 — Steel Floor Register

How to Specify

Provide the following information:

  • Model Number
  • Width
  • Length
  • Finish

421 — Steel Floor Register

Assets/Details

Submittal Data (58 KB, PDF)
Engineering Data (168 KB, PDF)
  • All-steel construction
  • Multi-angle fin setting
  • Rolled fin for strength and safety
  • Welded construction
  • Foot-operated dial control
  • Heavy-gauge, stamped face
  • Golden Sand or Bright White enamel finish

Available sizes (inches)

SizeFree Area (sq in)
2 x 1015
2 x 1217
2 x 1420
4 x 822
4 x 1027
4 x 1232
4 x 1437
6 x 1039
6 x 1248
6 x 1456

421 - Steel Floor Register - Dimensional Drawing

Product Performance Measurements*

All Sizes
2 x 10
2 x 12
2 x 14
4 x 8
4 x 10
4 x 12
4 x 14
6 x 10
6 x 12
6 x 14

Terminal Velocity

75 FPM

Size Face Velocity 300 400 500 600 700 800 900 1000
W x H "AK"
2 x 100.085CFM035455060707585
Spread03556789
Throw044.5678910
2 x 120.1CFM30405060708090100
Spread344.55.56.5789
Throw3.54.55.57891011
2 x 140.115CFM354560708090105115
Spread3.545778910
Throw3.54.56889.510.512
4 x 80.13CFM4050658090105115130
Spread3456.57.58.59.511
Throw44.567.58.5101113
4 x 100.17CFM507085100120135155170
Spread4.556.57.591011.513
Throw468101112.51415.5
4 x 120.195CFM6080100120140160175195
Spread56.589.511.51314.516
Throw45.5789.5111213
4 x 140.23CFM7090115140160185205230
Spread5.578.5101213.515.517
Throw4.55.578.51011.512.514
6 x 100.24CFM7095120145170190215240
Spread5.5781012141517
Throw45.578.5101112.514
6 x 120.285CFM85115140170200230255285
Spread67.591113151719
Throw4.567.5910121416
6 x 140.33CFM100130165200230265300330
Spread6.589121416.51820
Throw4.56.589.511131517