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L1-15B.15 – Tubular Daylighting Device (TDD)

L1-15B.15 – Tubular Daylighting Device (TDD) A non-operable device primarily designed to transmit daylight from a roof surface to an interior ceiling surface via a tube. The device consists of an exterior glazed surface, a light transmitting tube with a...

L1-15B.14 – Transom Windows

L1-15B.14 – Transom Windows A non-operable window that is often installed above either another window or a door. Transoms may consist of a glazed frame or a non-operable sash within a...

L1-15B.13 – Storm Window

L1-15B.13 – Storm Window A glazed window attachment product designed to be mounted to the inside or outside of a window to create an air space between the window and the storm window. This is sometimes called an “energy...

L1-15B.12 – Hinged Escape / Rescue / Egress Window

L1-15B.12 – Hinged Escape / Rescue / Egress Window Opens wide enough to allow escape from inside (and entrance for rescue workers). Many building codes require egress windows in all bedrooms that do not have doors that exit the...

L1-15B.11 – Types of Windows

L1-15B.11 – Types of Windows Dual Action Window: Operates in two different ways — typically, the window consists of a sash that may tilt from the top or may swing inward from the side Greenhouse/Garden Window: Consists of a three-dimensional, five-sided...