MP21 – Malico Inc. Home » Passive Heat Sink » MP Series » MP21 – Malico Inc. :: MP21 :: Dimension Model No. L x W (mm) Height (mm) Weight (grams) CAD MP 21-12 21 x 21 11.6 4.6 By request MP 21-15 21 x 21 14.6 5.1 By request MP 21-18 21 x 21 17.6 5.6 By request MP 21-21 21 x 21 20.6 6.2 By request MP 21-23 21 x 21 22.6 6.5 By request MP 21-28 21 x 21 27.6 7.4 By request MP 21-33 21 x 21 32.6 8.3 By request Material : Aluminum 6063 Finish : Black anodize Remarks : Model number MP21-12 indicate 21x21mm is package footprint and 12 mm is overall height , all the dimensions are in arithmetic , the drawing overall height is real dimension :: Rth ( oC/W ) :: Air Velocity / Rth ( oC/W ) 200(LFM) 400(LFM) 600(LFM) MP 21-12 6.41 4.52 3.79 MP 21-15 6.09 4.23 3.51 MP 21-18 5.74 3.88 3.15 MP 21-21 5.42 3.61 2.91 MP 21-23 5.10 3.37 2.72 MP 21-28 4.74 3.08 2.46 MP 21-33 4.35 2.82 2.27