diff --git a/air_quality_sensor_enclosure.py b/air_quality_sensor_enclosure.py
new file mode 100644
index 0000000..5a99fa8
--- /dev/null
+++ b/air_quality_sensor_enclosure.py
@@ -0,0 +1,44 @@
+from cadquery import exporters
+from cq_warehouse.extensions import Workplane
+from cq_warehouse.fastener import *
+from cq_warehouse.thread import *
+from cqmore.curve import archimedeanSpiral, circle
+from cqmore.polygon import regularPolygon, star
+from cqmore.polyhedron import polarZonohedra, Polyhedron, superellipsoid
+from svg_path import addSvgPath
+from svgpathtools import svg2paths
+import cadquery as cq
+import cqmore
+from math import ceil, floor
+
+Workplane = cqmore.extend(Workplane)
+Workplane.addSvgPath = addSvgPath
+
+bottom = Workplane()
+
+w = 26
+h = 26
+t = 2
+
+screw_diameter = 3.3
+screw_radius = screw_diameter / 2.0
+
+hole_dist_from_side = 1.36
+
+bottom = bottom.box(w, h, t)
+bottom = (
+    bottom.faces(">Z[1]")
+    .rect(
+        w - hole_dist_from_side - screw_diameter,
+        h - hole_dist_from_side - screw_diameter,
+    )
+    .vertices()
+    .hole(screw_diameter, t)
+)
+
+cq.exporters.export(bottom, "/home/deck/model_files/air_quality_enclosure_bottom.step")
+
+try:
+    show_object(lower_box)
+except NameError:
+    pass
diff --git a/curtain_holder.py b/curtain_holder.py
index 086915a..51798db 100644
--- a/curtain_holder.py
+++ b/curtain_holder.py
@@ -19,7 +19,7 @@ rod_female = rod_female.cylinder(rod_height, rod_radius)
 
 rod_female = rod_female.workplane(
     offset=(rod_height / 2.0) - female_hole_height / 2
-).cylinder(female_hole_height, (rod_radius / 2.0) + 0.15, combine="cut")
+).cylinder(female_hole_height, (rod_radius / 2.0) + 0.12, combine="cut")
 
 rod_female = rod_female.workplane(
     offset=-(rod_height / 2.0) - (female_hole_height / 2) + 20
@@ -37,7 +37,7 @@ result = result.box(length, width, height)
 result = (
     result.workplane(offset=-13)
     .center(0, 0)
-    .box(length / 2, width, height + 7.73, combine="cut")
+    .box(length / 2, width, height + 13.61, combine="cut")
 )
 result = (
     result.workplane(offset=-30)