(14) Rectangle Dust Collection Intake Ports (2.25", 2.5”, & 4" Variants)

Keep your workshop clean and efficient with this versatile assortment of rectangular dust collection intake ports designed to help collect a large field of dust in the workshop. They are designed to slip directly into a precut hole, making them ideal for tight spaces where you only have room for the port itself and a wide mounting flange won't fit.

Installation requires gluing or silicone into place, and the precut hole should be the same dimensions as the lower bevel of the flute.

Design Styles & Customization

Flat Top vs. Dual Bevel: A few versions come with a flat top to the bevel/flute, while the rest feature a dual bevel look (transitioning from the flute to a second bevel at the top of the port). There is no real aerodynamic benefit to the dual bevel—it is primarily a look preference, though it may strengthen the joint if it's in an area prone to getting bumped.

Custom Sizes: Upon request, models can be adjusted to custom sizes or made with either style.

Available Versions (in all port sizes)

• Standard Height Straight

• Low Profile Straight

• Standard Height w/ 45-Degree Angled

• Low Profile w/ 45-Degree Angled

Specifications & Dimensions

(Note: Low profile intake ports share the same dimensions per port size, except the main bevel/flute height is 0.5”. Also the second top bevels do not add to the total height, but bevel into the round port at a height of 0.25”.)

2.25” Ports

• Stop Lip: 7" X 3.25" X 0.0625” thick

• Stop Insert Depth: 0.1875”

• Bevel: 6.75” X 3” X 1.5” high (transitions to 2.5” sq at top)

• Port: 2.25” OD / 2” ID / 1.5” high

• Wall Thickness: 0.125”

• Total Height: 2.1368” (Note: 45-degree variant total height is approx. 5.96”)

2.5” Ports

• Stop Lip: 7.25" X 3.5" X 0.0625” thick

• Stop Insert Depth: 0.1875”

• Bevel: 7” X 3.25” X 1.5” high (transitions to 2.75” sq at top)

• Port: 2.5” OD / 2.25” ID / 1.5” high

• Wall Thickness: 0.125”

• Total Height: 3.25” (Note: 45-degree variant total height is approx. 6”)

4” Port

• Stop Lip: 8.75" X 5" X 0.0625” thick

• Stop Insert Depth: 0.1875”

• Bevel: 8.5” X 4.75” X 1.5” high (transitions to 4.25” sq at top)

• Port: 4” OD / 3.75” ID / 1.5” high

• Wall Thickness: 0.125”

• Total Height: 3.25” (Note: 45-degree variant total height is approx. 6.8”)

Print Settings & Recommendations

Because these are functional workshop tools that frequently handle heavy hoses and tension, follow these guidelines for maximum durability:

• Orientation: Print with the mounting side directly on the bed.

• Material: PETG, ABS or ASA highly recommended for workshop impact resistance and thermal stability. (PLA can work for light duty, but may creep or warp under constant hose tension or warm shop conditions).

• Layer Height: 0.12mm to 0.20mm

• Infill: 20% or higher (Gyroid or Grid pattern recommended).

• Perimeters / Walls: 4 or more walls (Pro-tip: Extra perimeter walls add significantly more functional strength to thin-walled parts than high infill percentages alone).

• Supports: These printed out fine without them, but if you have problems with bridging you could add some custom supports under the four flat inner corners where the geometry transitions from a rectangle to a circular tube.

Pro-Tip: A brim or custom brims on the corners will help prevent lifting while printing. Consider adding a brim on each of the custom supports too if you use them. See image.

Custom Requests

Need a specific size, a different flute height? Drop a comment below with your required dimensions, and I’ll do my best to spin up a custom file for you!

Explore More Workshop Upgrades

Browse my full catalog of custom adapters, dust collection fittings, and workshop jigs here:

• Workshop Tools and Jigs:                         https://www.printables.com/@DPs_Designs_4882792/collections/3599922

• Workshop Dust Collection Fittings:  https://www.printables.com/@DPs_Designs_4882792/collections/3599928