Gemfan D90S 90 mm ducted 3-blade propeller (1.5 mm T-mount) — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/gemfan-d90s-3-blade-1-5mm/  (sheet CC BY 4.0)
Basis: Secondary source: GetFPV (copy of the maker's figures; the maker publishes none directly)
Catalog version: 2026-10-20

Overall (mm): length 90, width 90, height 5.5
- Cinewhoop prop for 3.5 in ducts.
- T-mount hole spacing is not given.
- True size, no printing tolerance added. Only published numbers are used; anything not published is said so.
- Secondary source: the numbers come from a retailer or magazine copy of the maker's specification.

dimension  value
Diameter  90 mm (3.5 in)
Pitch  3 in
Hub thickness  5.5 mm
Bore / mount  1.5 mm hub ID, T-mount
Weight  2.3 g
Blades  3

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- GetFPV: Gemfan D90S 90mm 3.5" Ducted 3-Blade - 1.5mm Shaft — web — Publisher's page; dimensions are facts — https://www.getfpv.com/gemfan-d90s-90mm-3-5-ducted-3-blade-cinewhoop-propeller-1-5mm-shaft-set-of-4.html

Free files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/gemfan-d90s-3-blade-1-5mm/index.json
API: https://xemstudio.com/api/geometry?object=gemfan-d90s-3-blade-1-5mm