Brick and concrete block sizes: US modular, UK, DIN 105 and CMU 4 to 12 in — dimension sheet
Source: Xem Studio, https://xemstudio.com/objects/bricks-and-blocks/  (CC BY 4.0)
Basis: ASTM C216 / BIA modular sizes (nominal minus a 3/8 in joint), BS EN 771-1 UK work size, DIN 105 formats, ASTM C90 CMU actual sizes (nominal minus 3/8 in)
Catalog version: 2026-10-20

Sizes: see table below
- Concrete blocks are drawn as their outside envelope; core shapes vary by maker.

unit  length_mm  width_mm  height_mm
US modular brick  193.7  92.1  57.1
US standard brick  203.2  92.1  57.1
US queen brick  193.7  69.8  69.8
UK brick (BS EN 771-1 work size)  215.0  102.5  65.0
DIN 105 NF (Normalformat)  240.0  115.0  71.0
DIN 105 DF (Dünnformat)  240.0  115.0  52.0
DIN 105 2DF  240.0  115.0  113.0
CMU 4×8×16  396.9  92.1  193.7
CMU 6×8×16  396.9  142.9  193.7
CMU 8×8×16  396.9  193.7  193.7
CMU 10×8×16  396.9  244.5  193.7
CMU 12×8×16  396.9  295.3  193.7

Files elsewhere (not hosted by Xem Studio; license as stated by the publisher):
- ASTM: ASTM C216 Facing brick; ASTM C90 Loadbearing concrete masonry units — standard — ASTM; dimensions are facts [verify license at link] — https://www.astm.org/c0090-22.html
- DIN: DIN 105 Clay masonry units — standard — DIN; dimensions are facts [verify license at link] — https://www.din.de/en

Free files (CC BY 4.0, Xem Studio; STEP + STL, 12 parts): https://xemstudio.com/files/hardware/bricks-and-blocks/index.json
API: https://xemstudio.com/api/geometry?object=bricks-and-blocks