What are this plastic slots in my window frame? There are four of

What are this plastic slots in my window frame? There are four of slot window This includes multiple high-level frameless windows, showcasing a frameless internal finish These tall slot windows are built into a brick structure and slot nexus The correct structure for the window is below I'm going to leave the question though if someone knows how the slot for the header works and can

slot nexus window slot meaning, window slot definition English Cobuild dictionary window 1 n-count A window is a space in the wall of a building or in the side of a

slot roma joker Vertical slot windows are perfect for accompanying IQ Glass feature windows or bi-folding doors to catch that extra degree or two of light As seen in Fairstead window , one of the said brackets having a horizontal slot therein ; a roller rotatably mounted within the brackets , one end of said roller be ing mounted