Transform Any Floor Vent Into Something Useful
Open-source, 3D printable attachments that snap onto standard floor vents. Build sheet forts for the kids or redirect airflow wherever you need it.
Our Products
Two designs, endless possibilities
4" Round Duct Adapter
Connect standard dryer vent hoses to any floor register
Sheet Fort Clip Attachment
Turn any floor vent into a sheet fort anchor point
What Will You Build?
Real solutions for real problems
Kids' Sheet Forts
Create magical play spaces that stay warm and cozy. The clip securely holds blankets and sheets while the vent provides gentle airflow, making indoor camping an adventure.
Home Office Comfort
Redirect warm or cool air directly to your workspace. Stop fighting with household thermostat settings and create your own microclimate for peak productivity.
Humidity Control
Route dry, heated air to areas prone to dampness. Perfect for basements, bathrooms, or any space where you need to reduce moisture without a dehumidifier.
Pet Comfort Zones
Create warm resting spots for furry family members. Redirect vent air to pet beds or crates for cozy napping spots they'll love.
Grow Room Ventilation
Maintain optimal temperature for indoor plants or seedling trays. Route warm air to grow shelves or greenhouses for year-round gardening.
Blanket Fort Parties
Host the ultimate kids' party with interconnected fort systems. Multiple clips let you build massive structures spanning entire rooms.
What People Are Saying
Real reviews from real makers
Sarah M.
Portland, OR"My kids are absolutely obsessed with their new sheet fort! The clip holds the fabric securely without tearing, and the warm air from the vent keeps them cozy. Best rainy day activity we've found."
Mike T.
Denver, CO"Finally solved my basement humidity problem. Connected a 4" duct hose to redirect warm air to my home office. Printed in PETG and it's been running for 3 months with zero issues."
Jennifer K.
Austin, TX"The design is so clever! My daughter loves that she can build her reading nook anywhere there's a floor vent. We've printed 4 of these for different rooms. Easy print, no supports needed."
David R.
Minneapolis, MN"Minnesota winters are brutal. Used this to redirect heat to my workshop in the garage. The snap-fit is solid and the seal is surprisingly airtight. Would love to see a 6" version!"
Amanda L.
Seattle, WA"Great concept and works well. Printed in PLA and had to reprint in PETG for better heat resistance near the vent. One star off because the instructions could mention material choice more prominently."
Chris B.
Chicago, IL"I'm a 3D printing hobbyist and this is one of the most practical prints I've done. The tolerances are spot-on for standard dryer vent hoses. Used it to improve airflow to my filament dry box!"
Ready to Print?
Download the STL files, slice with your favorite slicer, and start printing. No supports needed, no special materials required.
Read the Printing Guide →Quick Specs
Everything you need to know at a glance
| Specification | Sheet Fort Clip | Round Duct Adapter |
|---|---|---|
| Vent Compatibility | 4" × 10" standard | 4" × 10" standard |
| Output Size | Rectangular clip | 4" round (dryer hose) |
| Print Time | ~2-3 hours | ~3-4 hours |
| Filament Required | ~80g | ~120g |
| Recommended Material | PETG or PLA+ | PETG |
| Supports Required | No | No |
| Difficulty | Beginner | Beginner |