Product Selection Guide OPERABLE WINDOWS - PRODUCT COMPARISON EFCO KAWNEER OLD CASTLE BUILDING ENVELOPE US ALUMINUM YSW 400 T Thermally Broken Sliding Window for Monolithic and Insulating Glass Series 6555 8470TL Non-Impact Signature Horizontal Slider 8200 (4-1/2 " Depth) YVS 400 TU Thermally Broken Single and Double Hung Window for Insulating Glass Series 680/690 8430TL Non-Impact 57P Series 8000 YVS 410 TU Thermally Broken Single and Double Hung Window for Insulating Glass Series 670-675 8450TL Non-Impact 57P Series 8000 YVS 410 TUH Thermally Broken Impact Resistant Single and Double Hung Window for Insulating Glass Series 663 Impact Grade 8450TL - Series IW8000 YKK AP PRODUCT Page-40 PS-1000-08 | Effective Date: April 28, 2020