Could it be a balance?
Isaiah 40:12 Who hath measured the waters in the hollow of his hand, and meted out heaven with the span, and comprehended the dust of the earth in a measure, and weighed the mountains in scales, and the hills in a balance?
Might it be a window?
Genesis 8:1-2 And God remembered Noah, and every living thing, and all the cattle that was with him in the ark: and God made a wind to pass over the earth, and the waters assuaged; The fountains also of the deep and the windows of heaven were stopped, and the rain from heaven was restrained; The fountains also of the deep and the windows of heaven were stopped, and the rain from heaven was restrained;
Or is it part of the framework?
Song of Solomon 2:9 My beloved is like a roe or a young hart: behold, he standeth behind our wall, he looketh forth at the windows, shewing himself through the lattice.
What is it?
One day we will too!
Stay curious and learn!