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It doesn't list actual dimensions, but I would think it would fit fine. It might be a very small amount (≈1") too wide as it is designed for 13" Macbooks. But it should work, I used a Marware sleeve case with my T40 for years. It was designed for a 15" Powerbook G4, but it was still the best fitting case for a 14.1" T40 (all the "PC" cases were way too big).