End-Vent Slider (VS3)

End Vent Sliding windows operate using two sashes that move side to side on either side of the window, with the center remaining fixed. Either the left or right sash can be opened and tilted inward for easy cleaning and maintenance. End Vent Slider windows provide a decent range of ventilation combinations for controlled air circulation and are perfect for oversized openings where traditional tilt sliders cannot be utilized.

End-Vent Slider (VS3)

End Vent Sliding windows operate using two sashes that move side to side on either side of the window, with the center remaining fixed. Either the left or right sash can be opened and tilted inward for easy cleaning and maintenance. End Vent Slider windows provide a decent range of ventilation combinations for controlled air circulation and are perfect for oversized openings where traditional tilt sliders cannot be utilized.

Standard Features

Slides side-to-side
(Hover over image)

Easy Removable Bug Screen
(Hover over Image)

Tilt Pivot Lock Shoe

Tamper Proof Sash Lock

Additional Standard Features

Choose from 7/8” double-glazed or triple-glazed units for superior thermal insulation and optimum energy efficiency.
3 1/4″ fusion-welded construction ensures long-lasting strength and stability.
Sleek Finish: U.P.V.C. bright white interior and exterior deliver a clean, modern design.
Shadow groove cleaned corners provide a smooth, modern look.
Multi-chamber design maximizes structural integrity while exceptional thermal performance.
Appointed screw chambers allow for secure, accurate fitting.
Interior removable cover
Integrated concealed outside drainage system to ensure easy water management

Energy Ratings

Model	Brand	ENERGY STAR Most Efficient 2020 – 2025	U-factor (W/m² – K)	Solar Heat Gain (SHGC)	Energy Rating
SSLOK-366-ARG97-CLR-ARG97-366-3-1.375	Weather Seal Windows	Y	0.97	0.18	26
SSTK-CLR-KRY90-CLR-KRY90-DI89-3-0.875	Weather Seal Windows	Y	1.22	0.5	41
SSLOK-CLR-KRY90-CLR-KRY90-DI89-3-1.375	Weather Seal Windows	Y	1.16	0.48	40
SSTK-180ESC-KRY90-CLR-KRY90-180ESC-3-0.875	Weather Seal Windows	Y	1.09	0.46	41
SSLOK-180ESC-KRY90-CLR-KRY90-180ESC-3-1.375	Weather Seal Windows	Y	1	0.43	40
SSLOK-180ESC-ARG97-CLR-ARG97-180ESC-3-1.375-GRL	Weather Seal Windows	Y	1.04	0.39	37
SSTK-CLR-KRY90-DI89-3-0.875	Weather Seal Windows	Y	1.43	0.56	40
SSLOK-180ESC-ARG97-CLR-ARG97-180ESC-3-1.375	Weather Seal Windows	Y	1.04	0.43	39
SSLOK-180ESC-KRY90-CLR-KRY90-180ESC-3-1.375-GRL	Weather Seal Windows	Y	1	0.39	38
SSLOK-366-ARG97-CLR-ARG97-366-3-1.375-GRL	Weather Seal Windows	Y	0.97	0.16	25
WEATHERSEA1VS1-CL-CG7568-ARG	Weather Seal Windows	N	1.68	0.54	34
SSTK-CLR-ARG97-CLR-ARG97-180-3-1.00	Weather Seal Windows	N	1.44	0.5	36
SS-DG,LOE180/LOE180	Weather Seal Windows	N	1.54	0.49	34
SS-DG,CLR/LOE180	Weather Seal Windows	N	1.6	0.54	35
SSRLOK-180ESC-ARG97-CLR-ARG97-180ESC-3-0.875	Weather Seal Windows	N	1.35	0.46	36
SSRLOK-CLR-ARG97-CLR-ARG97-180ESC-3-0.875	Weather Seal Windows	N	1.56	0.5	34
SSRLOK-180ESC-ARG97-180ESC-3-0.875	Weather Seal Windows	N	1.56	0.5	34
SSRLOK-CLR-ARG97-180ESC-3-0.875	Weather Seal Windows	N	1.63	0.55	35
SSLOK-SSLOK-CLR-ARG97-CLR-ARG97-DI89-3-1.375-GRL	Weather Seal Windows	N	1.19	0.42	35
SSLOK-CLR-ARG97-CLR-ARG97-366-3-1.375	Weather Seal Windows	N	1.2	0.28	27
SSLOK-CLR-ARG97-CLR-ARG97-180ESC-3-1.375-GRL	Weather Seal Windows	N	1.26	0.42	34
SSLOK-CLR-ARG97-CLR-ARG97-180ESC-3-1.375	Weather Seal Windows	N	1.26	0.47	37
SSLOK-CLR-KRY90-DI89-3-0.875	Weather Seal Windows	N	1.43	0.53	37
SSLOK-CLR-ARG97-CLR-ARG97-272-3-1.375	Weather Seal Windows	N	1.22	0.35	31
SSLOK-CLR-ARG97-CLR-ARG97-272-3-1.375-GRL	Weather Seal Windows	N	1.22	0.31	28
SSLOK-CLR-ARG97-CLR-ARG97-366-3-1.375-GRL	Weather Seal Windows	N	1.2	0.25	25
SSLOK-SSLOK-CLR-ARG97-CLR-ARG97-DI89-3-1.375	Weather Seal Windows	N	1.19	0.47	38
SSLOK-CLR-KRY90-CLR-KRY90-DI89-3-1.375-GRL	Weather Seal Windows	N	1.16	0.43	37
SSTK-CLR-ARG97-180ESC-3-0.750	Weather Seal Windows	N	1.61	0.55	35
SSTK-CLR-ARG97-180ESC-3-0.875	Weather Seal Windows	N	1.63	0.56	35
SSTK-CLR-ARG97-180ESC4-47/8	Weather Seal Windows	N	1.62	0.54	34
SSTK-180ESC-ARG97-180ESC-3-0.750	Weather Seal Windows	N	1.54	0.51	34
SSTK-180ESC-ARG97-180ESC-3-0.875	Weather Seal Windows	N	1.57	0.51	34
SSTK-180ESC-KRY90-180ESC-3-0.875	Weather Seal Windows	N	1.52	0.51	35
SSTK-CLR-ARG97-DI89-3-0.875	Weather Seal Windows	N	1.46	0.56	39
SSTK-CLR-ARG97-DI89-3-0.875-GRL	Weather Seal Windows	N	1.46	0.5	36
SSTK-CLR-KRY90-DI89-3-0.875-GRL	Weather Seal Windows	N	1.43	0.51	37
SSTK-180ESC-ARG97-I89-3-0.750	Weather Seal Windows	N	1.37	0.51	38
SSTK-180ESC-ARG97-I89-3-0.750-GRL	Weather Seal Windows	N	1.37	0.45	35
SSTK-180ESC-ARG97-I89-3-0.875	Weather Seal Windows	N	1.38	0.51	38
SSTK-180ESC-ARG97-I89-3-0.875-GRL	Weather Seal Windows	N	1.38	0.46	35
SSTK-180ESC-ARG97-SSTK-CLR-ARG97-180ESC-3-0.875	Weather Seal Windows	N	1.36	0.46	35
SSLOK-CLR-ARG97-DI89-3-0.875	Weather Seal Windows	N	1.45	0.53	36

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Standard double or upgraded triple insulated glass, overall thickness: 7/8″.

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SuperSpacer®

Weather Seal uses SuperSpacer for all its manufactured windows, designed specifically for the North American climate. SuperSpacer, provides the warmest, highest performance glass spacer on the market. SuperSpacer 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 delivers high wind load resistance, exceptional thermal performance, argon gas retention and long-term durability.
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