1.800.221.4169
The 811-I window offers the same features as the 810-I heavy commercial window with additional impact grade glazing options.  E-Strut® thermal isolators provide outstanding thermal performance and dual finish capability. Please contact EFCO Procuct Technical Support Department for Blast / DoD applications.

E-Strut™ thermal isolator
Completely eliminates dry shrinkage
Dual finish capability
Improves U-Value performance
Angle reinforced vent corners
Improves sash/vent rigidity
Pressure equalization
Superior water resistance
Anodized or painted finishes available
Unlimited options to answer economic and aesthetic concerns
  • Fixed

    Fixed

    Details
    Elevations
  • Casement Out

    Casement Out

    Details
    Elevations
  • Casement Out

    Casement Out

    Details
    Elevations
  • Casement Out

    Casement Out

    Details
    Elevations
  • Casement Out

    Casement Out

    Details
    Elevations
  • Casement Out

    Casement Out

    Details
    Elevations
  • Project Out

    Project Out

    Details
    Elevations
  • Project Out

    Project Out

    Details
    Elevations
  • Project Out

    Project Out

    Details
    Elevations
  • Project Out

    Project Out

    Details
    Elevations
  • Project Out

    Project Out

    Details
    Elevations
  • Project Out

    Project Out

    Details
    Elevations
  • 2129

    2129

  • 2349

    2349

  • 2382

    2382

  • 2804

    2804

  • 2841

    2841

  • 2903

    2903

  • 2904

    2904

  • 2908

    2908

  • 2909

    2909

  • 2910

    2910

  • 2912

    2912

  • 2913

    2913

  • 2922

    2922

  • 2937

    2937

  • 2987

    2987

  • 2997

    2997

  • 3638

    3638

  • 4189

    4189

  • 1263

    1263

  • 1264

    1264

  • 1276

    1276

  • 1310

    1310

  • 1329

    1329

  • 1M29

    1M29

  • 1M49

    1M49

  • 1M54

    1M54

  • 2M12

    2M12

  • 3M03

    3M03

  • 3M08

    3M08

  • 3M13

    3M13

  • 3M18

    3M18

  • 3M23

    3M23

  • EJ18

    EJ18

  • EK58

    EK58

  • EP25

    EP25

  • EP93

    EP93

  • 3 1/2" Impact Subframe

    3 1/2" Impact Subframe

  • 1443

    1443

  • 1584

    1584

  • 2153

    2153

  • EX20

    EX20

  • EX28

    EX28

  • EX38

    EX38

  • EX52

    EX52

  • EX54

    EX54

  • EX56

    EX56

  • KC35SL

    KC35SL

  • 0.5625 Dual

    0.5625 Dual

  • 0.5626 Monolithic

    0.5626 Monolithic

  • 1.345 to 1.189 Dual

    1.345 to 1.189 Dual

  • 1.345 to 1.189 Monolithic

    1.345 to 1.189 Monolithic

  • 1.795 to 1.637 Dual

    1.795 to 1.637 Dual

  • 1.795 to 1.639 Monolithic

    1.795 to 1.639 Monolithic

  • 2.6366 to 2.210

    2.6366 to 2.210

  • 1S42

    1S42

  • 1S86

    1S86

  • 3S04

    3S04

  • 3S24

    3S24