Sliding Window Exhaust Pipe Adapter (with Wind Block, Insect Net, Rain Strip)

[1. Features], [2. Part and Dimension Description], [3. Printing and Installation Guide], [4. Exhaust Duct Specifications].Please read to the end before printing!

Updated 2026.5.4V3.1:
1. Added 2L block, with a 70% larger cross-section compared to block 2! Full exhaust effect can be achieved with an 8cm exhaust duct! The exhaust effect for 10cm exhaust ducts can also be enhanced! (The 2L block is still compatible with old version wind baffles)
2. Optimized the diameter at the connection point between the exhaust duct and the 3D printed part to accommodate the tolerances of mainstream aluminum foil exhaust ducts on the market.
3. Optimized pre-arranged, making it more convenient for A1 mini users and users initiating printing from their phones!

[1. Features]

This converts 5, 8, and 10cm exhaust ducts into a flat opening and secures them to a sliding window

This design minimizes the window opening area. The insect screen prevents small insects larger than 5mm from entering, and the optional rain cover extends outward by 40mm. The wind baffle has slots to strengthen connections between each other, and it has wings (the numbered parts in the model) that are 20mm thick (measured by the caliper in the image below) and 25mm deep (measured by the steel ruler in the image below) that can be inserted into the window gap. Even if your window has latches and buffer blocks, the wind baffle has a clearance design to ensure a snug fit. All modules require no supports. Modules printed with Bambu Lab PLA Basic and PETG HF can fit together.

If you need an exhaust vent for outward-opening windows, you can use my other model:https://makerworld.com.cn/zh/models/2371214

[2. Part and Dimension Description]

STEP files have been uploaded and can be modified using mainstream modeling software according to your window dimensions. On the webpage, click "Download STL/CAD Files" in the dropdown menu to the right of the green button to download them.

If the dimensions are unsuitable and you are unfamiliar with modeling software, you can follow [3. Printing and Installation Guide] in Bambu Studio slicer software.

Test block 1 can be used to pre-test dimensions, with a main body length of 20mm. (The main body length does not include the slots; each side of the slot is 20mm long, same below). If your window is similar to mine, it is recommended to print 1 test block 1 first. Test block 1 can also be used as a wind baffle.

Block 2 and the extended 2L block connect to the flat exhaust opening (also serving as an insect screen). Their main body lengths are 104mm and 174mm respectively. A 5cm exhaust duct nozzle is paired with block 2. An 8cm or 10cm nozzle is paired with the 2L block to reduce exhaust resistance.

A rain baffle (the arch-like object in the model) can be installed as needed. It is connected by two cylindrical rods with a diameter of 4mm and a length of 20mm. If you have multiple devices that need exhaust, you can print multiple block 2s or extended 2L blocks. Since 8cm and 10cm flat exhaust openings have a larger curvature, a rain baffle is generally not needed, but pre-drilled holes are reserved. If needed, you can print the rain baffle from plate 2 separately.

Block 3 is used as a bottom pad for left-opening windows (or a top pad for right-opening windows), with a main body length of 100mm. My window has a buffer soft block near the bottom and top (see image below), so a clearance design was made in the wing. The length of the clearance part is 70mm. If your window does not have a buffer soft block, block 3 can still be used as a regular wind baffle.

Blocks 4, 5, and 6 are all wind baffles, with main body lengths of 130mm, 80mm, and 50mm respectively.

Blocks 1 and 9 are also wind baffles, with main body lengths of 20mm and 5mm respectively.

The printing quantity of these 5 lengths of wind baffles is determined by the height of your window. Various combinations should satisfy most windows.

Block 7 is used to clear the central latch of the window (see image below), with a main body length of 100mm. The length of the middle notch is 50mm. If your window does not have a central latch, block 7 can still be used as a regular wind baffle.

Block 8 is used as a top pad for left-opening windows (or a bottom pad for right-opening windows), similar to block 3.

The main body width, slot length, wing depth, and wing thickness of each module are consistent, with the main differences being the main body length and the wing's clearance design.

When calculating the length of the wind baffle, remember to include the slot length! Two 20mm slots installed will add 20mm to the length!

[3. Printing and Installation Guide]

1. If your window is similar to mine, first print the "Test Module 1" and install it on the window for testing.

2. If the dimensions are unsuitable and you are unfamiliar with 3D modeling software and STEP files, open Bambu Studio slicer software on your computer:

   (1) If the wing length of 25mm is too long to fully insert into the window, select the wind baffle, click the cut tool, set the Y-axis to 90 degrees, then drag the yellow square to the appropriate position, and cut off and delete the excess part as needed.

   

   (2) If the wing thickness of 20mm is too thick to insert into the window, select the wind baffle, use the scaling function in the slicer software, uncheck "Uniform scale", then modify the Z-axis percentage. For example, to change the thickness to 18mm, set the percentage to 90%; to change the thickness to 15mm, set the percentage to 75%. Note that if modified too thin, the insect screen part of blocks 2 and 2L may become too thin and break, which you can repair with mesh yourself.

   

   (3) If the wing thickness of 20mm is too thin, print directly, then apply thick tape to the wing. Note: if the dimensions are modified, remember to modify every wind baffle! The exhaust duct connector does not need to be modified.

3. After the dimensions are suitable, print blocks 3, 7, and 8 from "V3.1" (plate 1).

4. Depending on the diameter of the exhaust duct you plan to use, if using a 5cm exhaust duct to flat opening, print block 2 (plate 2). If using an 8cm exhaust duct, print the extended 2L block and flat opening (plates 3 and 4). If using a 10cm exhaust duct, print the extended 2L block and flat opening (plates 3 and 5).

   [If you have an 8cm or 10cm exhaust duct but still want to use a shorter flat opening, you can print plate 6 (8cm) or plate 7 (10cm) from "V2.4" to fit block 2.]

5. After printing, install it on your window, measure the required length of the wind baffle in the middle, and then decide the specific combination and quantity of the 5 lengths of wind baffles (blocks 1, 4, 5, 6, 9) (plates 6 and 7).
6. Note: The "plates" above are designed according to A1 mini dimensions. Users of other larger size printers can arrange the plates themselves as needed.

[4. Exhaust Duct Specifications]

The 5cm printed part has an outer diameter of 50mm and an inner diameter of 47mm. Use an exhaust duct with an inner diameter greater than or equal to 50mm to wrap around the 3D printed part, or an exhaust duct with an outer diameter less than or equal to 47mm to insert into the 3D printed part.

The 8cm printed part has an outer diameter of 80mm and an inner diameter of 77mm. Use an exhaust duct with an inner diameter greater than or equal to 80mm to wrap around the 3D printed part, or an exhaust duct with an outer diameter less than or equal to 77mm to insert into the 3D printed part.

The 10cm printed part has an outer diameter of 100mm and an inner diameter of 97mm. Use an exhaust duct with an inner diameter greater than or equal to 100mm to wrap around the 3D printed part, or an exhaust duct with an outer diameter less than or equal to 97mm to insert into the 3D printed part.