Vent & plumbing
This page builds a vent grille to your own measurements and exports it as an STL. Pick a frame shape, type the outside size and thickness in millimetres, choose an opening pattern, and the model is recalculated in your browser straight away.
It covers the places where no off-the-shelf grille exists: cabinet backs, PC and printer enclosures, campervan lockers, boiler covers and electrical boxes. Screw holes can be countersunk, and an optional rear collar lets the grille plug straight into a duct or panel cut-out.
Free, no sign-up. Change the sizes in millimetres and download the STL.
Each variant is the same template with different settings. Follow the link and the editor opens with those values.
Frame: Square · Pattern: Parallel lines · Outer size: 140 mm +6
Open this variant: Square frame, parallel lines
Frame: Circle · Pattern: Honeycomb · Outer size: 150 mm +5
Open this variant: Round frame, honeycomb
Frame: Hexagon · Pattern: Spiral · Outer size: 160 mm +6
Open this variant: Hex frame, spiral slots
Frame: Circle · Pattern: Square grid · Outer size: 140 mm +6
Open this variant: Square grid with duct collarThese values are edited in the editor's template panel. A number outside the range is clamped to the nearest limit automatically.
| Size | Range | Default |
|---|---|---|
| Shape | ||
| Frame | Circle, Square, Hexagon | Square |
| Pattern | Spiral, Radial, Venturi, Round holes, Honeycomb, Square grid, Parallel lines | Parallel lines |
| Dimensions | ||
| Outer size | 40–400 mm | 140 mm |
| Thickness | 1–10 mm | 3 mm |
| Frame width | 3–40 mm | 10 mm |
| Corner radius * | 0–50 mm | 4 mm |
| Pattern | ||
| Opening size | 1–30 mm | 1 mm |
| Rib thickness | 0.8–10 mm | 1.2 mm |
| Slot count * | 4–40 | 18 |
| Twist angle * | 0–80 ° | 30 ° |
| Outward flare * | 0–3 | 0.9 |
| Mounting | ||
| Screw holes | None, 4 holes | 4 holes |
| Screw Ø * | 2–8 mm | 4 mm |
| Countersink * | On / Off | On |
| Back collar | On / Off | Off |
| Collar Ø * | 20–380 mm | 100 mm |
| Collar length * | 5–100 mm | 25 mm |
Sizes marked with a star appear in the panel only when the related shape, style or option is active.
The seven patterns differ in open area and in feel. Parallel lines give the highest open area and slice fastest. Honeycomb and square grid build a stiffer face at the same opening size, so the grille does not flex when you press it.
The outside size is the edge the grille sits on: a diameter on a round frame, and the across-flats distance on square and hex frames. To cover an existing hole, add at least 10 mm so the border overlaps the edge.
Caliper the outer edge of the frame and the distance between screw holes. Enter the outside size as measured; the holes are placed in the frame corners, and changing the border width shifts them if the spacing does not match.
The outside size goes up to 400 mm, but most desktop beds are 220-256 mm. For large sizes place the model diagonally, or print it in two halves and join them with a strip behind.
Yes, both PLA and PETG handle water. Choose PETG where hot steam is constant, because PLA distorts after long exposure above 50 °C.
No. There is no sign-up, no email and no payment; enter the dimensions and download the STL directly.
This tool makes the flanged vent that fits the end of a ventilation duct, sized by you and exported as an STL. Enter the duct shape and internal size, pick the inner style, set the fit tolerance, and the part is computed in the browser.
Sizes and details: Duct vent
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Sizes and details: Drain strainer
This page opens the DrawSTL pipe flange template: a parametric round plate with a neck that mates to a pipe end and bolts to a surface or another flange, sized in millimetres and downloaded as a print-ready STL. You set the flange diameter and thickness, the neck diameter and length, and the bore that runs through.
Sizes and details: Pipe flangeOpen the template in the editor, enter your values and download a print-ready STL. No account needed.