March 3, 2015

Compare windowsThe Following Okna Casement Windows designated as 2015 most efficientMost Efficient 2015" by energystar.gov

Compare OKNA to other "Most Efficient 2015" and see why Okna is our first choice.

* for more information on understanding performance ratings see (Understanding NFRC)

*data source

OKNA Windows & Doors

Product Line

CPD Number

U-Factor

SHGC

Frame Type

PG

Climate Zones

Casement – 700 Series

OKW-K-26

0.16–0.20

0.22–0.24

Vinyl

70

N, NC, SC, S

Champion Window

Product Line

CPD Number

U-Factor

SHGC

Frame Type

PG

Climate Zones

Comfort 365 Extreme Energy

CHW-A-2

0.19–0.20

0.21–0.24

Vinyl

30

N, NC, SC, S

Comfort 365 Extreme Energy

CHW-A-3

0.18–0.20

0.21–0.25

Vinyl

35

N, NC, SC, S

Marvin Windows and Doors

Product Line

CPD Number

U-Factor

SHGC

Frame Type

PG

Climate Zones

Clad Ultimate Casement Venting Picture

MAR-N-378

0.17–0.20

0.20–0.40

Wood and Clad Wood

40

N, NC, SC, S

Clad Ultimate Casement Round Top Operator

MAR-N-357

0.19–0.20

0.20–0.25

Wood and Clad Wood

50

N, NC, SC, S

Clad Ultimate Pushout Casement

MAR-N-350

0.19–0.20

0.20–0.25

Wood and Clad Wood

35

N, NC, SC, S

Clad Ultimate Awning

MAR-N-343

0.18–0.20

0.20–0.39

Wood and Clad Wood

40

N, NC, SC, S

Clad Ultimate Casement

MAR-N-342

0.18–0.20

0.20–0.39

Wood and Clad Wood

50

N, NC, SC, S

Clad Ultimate Pushout Awning

MAR-N-360

0.20–0.20

0.20–0.25

Wood and Clad Wood

35

N, NC, SC, S

Integrity Awning

MAR-N-251

0.20–0.20

0.23–0.27

Fiberglass

50

N, NC, SC, S

Integrity Casement

MAR-N-250

0.20–0.20

0.23–0.27

Fiberglass

50

N, NC, SC, S

Wood Magnum Tilt-Turn

MAR-N-44

0.18–0.20

0.14–0.38

Wood and Clad Wood

40

N, NC, SC, S

Wood Magnum Tilt-Turn 4 9/16 Jamb

MAR-N-328

0.19–0.20

0.13–0.37

Wood and Clad Wood

40

N, NC, SC, S

Wood Ultimate Casement Picture

MAR-N-355

0.16–0.20

0.22–0.44

Wood and Clad Wood

50

N, NC, SC, S

Wood Ultimate Pushout Casement Picture

MAR-N-349

0.17–0.20

0.21–0.44

Wood and Clad Wood

35

N, NC, SC, S

Wood Ultimate Awning

MAR-N-354

0.19–0.20

0.21–0.36

Wood and Clad Wood

50

N, NC, SC, S

Wood Ultimate Casement

MAR-N-347

0.19–0.20

0.20–0.38

Wood and Clad Wood

50

N, NC, SC, S

Wood Ultimate Pushout Awning

MAR-N-358

0.20–0.20

0.21–0.23

Wood and Clad Wood

30

N, NC, SC, S

Wood Ultimate Pushout Casement

MAR-N-348

0.20–0.20

0.20–0.24

Wood and Clad Wood

35

N, NC, SC, S

Clad Magnum Tilt-Turn

MAR-N-45

0.20–0.20

0.14–0.25

Wood and Clad Wood

50

N, NC, SC, S

Pella Corporation

Product Line

CPD Number

U-Factor

SHGC

Frame Type

PG

Climate Zones

350 Series Casement (Nail Fin)

PEL-N-184

0.17–0.20

0.18–0.20

Vinyl

60

N, NC, SC, S

350 Series Casement (Pocket Frame)

PEL-N-188

0.17–0.20

0.18–0.20

Vinyl

60

N, NC, SC, S

350 Series Awning (Nail Fin)

PEL-N-187

0.17–0.20

0.18–0.20

Vinyl

60

N, NC, SC, S

350 Series Awning (Pocket Frame)

PEL-N-189

0.17–0.20

0.18–0.20

Vinyl

55

N, NC, SC, S

Pella Architect Series Aluminum Clad Fixed Casement with Advanced Low-E Triple IG

PEL-N-1

0.17–0.20

0.21–0.27

Wood and Clad Wood

30

N, NC, SC, S

Pella Architect Series Aluminum Clad Fixed Casement with SunDefense Low-E Triple IG

PEL-N-1

0.17–0.20

0.16–0.20

Wood and Clad Wood

30

N, NC, SC, S

Pella Architect Series Aluminum Clad Fixed Casement with NaturalSun Low-E Triple IG

PEL-N-1

0.17–0.20

0.35–0.44

Wood and Clad Wood

30

N, NC

Pella Architect Series Aluminum Clad Casement with Advanced Low-E Triple IG

PEL-N-11

0.19–0.20

0.21–0.23

Wood and Clad Wood

50

N, NC, SC, S

Pella Architect Series Aluminum Clad Casement with SunDefense Low-E Triple IG

PEL-N-11

0.19–0.20

0.16–0.17

Wood and Clad Wood

50

NC, SC, S

Pella Architect Series Aluminum Clad Casement with NaturalSun Low-E Triple IG

PEL-N-11

0.19–0.20

0.36–0.39

Wood and Clad Wood

50

N, NC

Pella Architect Series Aluminum Clad Casement with NaturalSun Low-E Triple IG

PEL-N-30

0.19–0.20

0.21–0.23

Wood and Clad Wood

50

N, NC, SC, S

Pella Architect Series Aluminum Clad Awning with SunDefense Low-E Triple IG

PEL-N-30

0.19–0.20

0.16–0.17

Wood and Clad Wood

50

NC, SC, S

Pella Architect Series Aluminum Clad Awning with NaturalSun Low-E Triple IG

PEL-N-30

0.19–0.20

0.36–0.39

Wood and Clad Wood

50

N, NC

Pella Architect Series Aluminum Clad Large Awning with Advanced Low-E Triple IG

PEL-N-30

0.19–0.20

0.21–0.23

Wood and Clad Wood

40

N, NC, SC, S

Pella Architect Series Aluminum Clad Large Awning with SunDefense Low-E Triple IG

PEL-N-30

0.19–0.20

0.16–0.17

Wood and Clad Wood

40

NC, SC, S

Pella Architect Series Aluminum Clad Large Awning with NaturalSun Low-E Triple IG

PEL-N-30

0.19–0.20

0.36–0.39

Wood and Clad Wood

40

N, NC

Pella Architect Series Wood Casement with Advanced Low-E Triple IG

PEL-N-39

0.18–0.20

0.19–0.23

Wood and Clad Wood

50

N, NC, SC, S

Pella Architect Series Wood Casement with SunDefense Low-E Triple IG

PEL-N-39

0.17–0.20

0.15–0.17

Wood and Clad Wood

50

NC, SC, S

Pella Architect Series Wood Casement with NaturalSun Low-E Triple IG

PEL-N-39

0.18–0.20

0.32–0.39

Wood and Clad Wood

50

N, NC

Pella Architect Series Wood Awning with Advanced Low-E Triple IG

PEL-N-40

0.18–0.20

0.19–0.23

Wood and Clad Wood

50

N, NC, SC, S

Pella Architect Series Wood Awning with Advanced Low-E Triple IG

PEL-N-40

0.18–0.20

0.15–0.17

Wood and Clad Wood

50

NC, SC, S

Pella Architect Series Wood Awning with NaturalSun Low-E Triple IG

PEL-N-40

0.18–0.20

0.32–0.39

Wood and Clad Wood

50

N, NC

Pella Architect Series Wood Large Awning with Advanced Low-E Triple IG

PEL-N-40

0.18–0.20

0.19–0.23

Wood and Clad Wood

40

N, NC, SC, S

Pella Architect Series Wood Large Awning with SunDefense Low-E Triple IG

PEL-N-40

0.18–0.20

0.15–0.17

Wood and Clad Wood

40

NC, SC, S

Pella Architect Series Wood Large Awning with NaturalSun Low-E Triple IG

PEL-N-40

0.18–0.20

0.32–0.39

Wood and Clad Wood

40

N, NC

Pella Architect Series Wood Fixed Casement with Advanced Low-E Triple IG

PEL-N-41

0.16–0.20

0.21–0.27

Wood and Clad Wood

30

N, NC, S, SC

Pella Architect Series Wood Fixed Casement with SunDefense Low-E Triple IG

PEL-N-41

0.16–0.20

0.16–0.20

Wood and Clad Wood

30

N, NC, S, SC

Pella Architect Series Wood Fixed Casement with NaturalSun Low-E Triple IG

PEL-N-41

0.16–0.20

0.35–0.45

Wood and Clad Wood

30

N, NC

Soft-Lite LLC

Product Line

CPD Number

U-Factor

SHGC

Frame Type

PG

Climate Zones

Casement

SSL-A-81

0.15–0.20

0.15–0.37

Vinyl

40

N, NC, SC, S

Awning

SSL-A-82

0.15–0.20

0.15–0.37

Vinyl

40

N, NC, SC, S