Quad-Seal Collection

Provides you with a modern contemporary flat exterior look

Casement Window

Our Quad-Seal Casement Windows provide you with an unobstructed view from top-to-bottom and side-to-side. They open to 93º degrees for easy cleaning and directing the flow of fresh air into your home.

Available in a variety of sizes to provide a custom fit for your home.

Quad-Seal Collection

Provides you with a modern contemporary flat exterior look

Casement Window

Available in a variety of sizes to provide a custom fit for your home.

Standard Features

Integrated Snap-Down Nesting Handle

Stainless Steel Multi-Point Locking System

Snap-in Removable Screen for Easy Cleaning

Fusion-Welded Frame and Sash for Added Strength and Prevention Of Air Infiltration.

Operator Allows Sash to Open 93° Degrees for Easy Cleaning

TRUTH Hardware Stainless Steel Hinges

Additional Standard Features

Our exclusive Quad-Seal System® ensures a superior seal
Shadow groove cleaned corners
7/8” insulated thermal dual-seal glass with Quanex Super spacer for optimum efficiency
Multi-chambered design with reinforced screw chambers
Integrated self-drainage system

Quad-Seal System
Cross-Section

Inside View

Energy Ratings

Model	Brand	ENERGY STAR Most Efficient 2021	U-factor (W/m2 – K)	Solar Heat Gain (SHGC)	Energy Rating

L-CAS- TG,CLR/CLR/LOE180-GRL	Weather Seal Windows	N	1.17	0.37	35

L-CAS- TG,CLR/LOE272/CLR-GRL	Weather Seal Windows	N	1.15	0.27	30

L-CAS-DG,LOE180/I89	Weather Seal Windows	N	1.28	0.4	35

L-CAS-TG,CLR/LOE272/CLR	Weather Seal Windows	N	1.15	0.3	32

L-CAS-TG,CLR/CLR/LOE180	Weather Seal Windows	N	1.14	0.4	38

L-CAS- TG,LOE180/LOE180/I89	Weather Seal Windows	Y	0.89	0.34	40

L-CAS-TG,CLR/LOE272/272- GRL	Weather Seal Windows	Y	0.94	0.24	33

Model	Brand	ENERGY STAR Most Efficient 2021	U-factor (W/m2 – K)	Solar Heat Gain (SHGC)	Energy Rating

L-CAS-TG,CLR/LOE272/272	Weather Seal Windows	Y	0.93	0.26	34

L-CAS- TG,LOE180/LOE180/I89-GRL	Weather Seal Windows	Y	0.9	0.32	38

L-CAS- TG,LOE180/CLR/LOE180	Weather Seal Windows	Y	0.96	0.36	39

L-CAS- TG,LOE180/CLR/LOE180- GRL	Weather Seal Windows	Y	0.97	0.33	37

CAS-TG,CLR/ CLR/LOE180	Weather Seal Windows	N	1.29	0.4	35

CAS-TG,LOE180/ CLR/LOE180	Weather Seal Windows	N	1.11	0.36	36

WEATHERSEA1CA1 LOE272/CLR/I89-GRL	Weather Seal Windows	N	1.21	0.19	24

WEATHERSEA1CA1 LOE366/CLR/LOE180	Weather Seal Windows	N	1.09	0.16	25

Model	Brand	ENERGY STAR Most Efficient 2021	U-factor (W/m2 – K)	Solar Heat Gain (SHGC)	Energy Rating

WEATHERSEA1CA1 LOE272/ CLR/LOE272	Weather Seal Windows	N	1.09	0.23	29

WEATHERSEA1CA1LOE180/ LOE180/I89-GRL	Weather Seal Windows	N	1.1	0.26	31

WEATHERSEA1CA1 LOE272/CLR/I89-SDL	Weather Seal Windows	N	1.17	0.22	27

CAS-TG,LOE180/ CLR/LOE180-GRL	Weather Seal Windows	N	1.15	0.33	34

WEATHERSEA1CA1 LOE272/ CLR/LOE272-SDL	Weather Seal Windows	N	1.13	0.21	27

WEATHERSEA1CA1 LOE272/CLR/LOE272-GRL	Weather Seal Windows	N	1.12	0.17	25

WEATHERSEA1CA1 LOE272/CLR/LOE180	Weather Seal Windows	N	1.1	0.24	30

WEATHERSEA1CA1 LOE272/CLR/LOE180-SDL	Weather Seal Windows	N	1.14	0.22	28

Model	Brand	ENERGY STAR Most Efficient 2021	U-factor (W/m2 – K)	Solar Heat Gain (SHGC)	Energy Rating

WEATHERSEA1CA1 LOE272/CLR/LOE180-GRL	Weather Seal Windows	N	1.13	0.18	25

WEATHERSEA1CA1 LOE366/CLR/LOE180-SDL	Weather Seal Windows	N	1.13	0.15	24

WEATHERSEA1CA1 LOE366/CLR/LOE180-GRL	Weather Seal Windows	N	1.12	0.12	22

WEATHERSEA1CA1 LOE272/CLR/I89	Weather Seal Windows	N	1.15	0.24	28

WEATHERSEA1CA1 LOE180/LOE180/I89	Weather Seal Windows	Y	1.03	0.34	37

WEATHERSEA1CA1 LOE180/LOE180/I89-SDL	Weather Seal Windows	Y	1.05	0.31	35

360° View of Window

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Warranty Information

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Standard Glass: DOUBLE INSULATED GLASS Overall Thickness 7/8"

Optional Glass: TRIPLE INSULATED GLASS Overall Thickness 1 3/8"

Click each logo to learn more about each glass option

SuperSpacer® Premium Plus

Weather Seal uses SuperSpacer Premium Plus for all its manufactured windows, designed specifically for the North American climate. SuperSpacer Premium Plus, provides the warmest, highest performance glass spacer on the market. SuperSpacer Premium Plus warm edge spacer is made of high-performance silicone material with integrally incorporated desiccant – which many designers and architects prefer. Even with its aesthetically pleasing narrow sightline, SuperSpacer Premium Plus delivers high wind load resistance, exceptional thermal performance, argon gas retention and long-term durability.
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