10" MDF Box Fan 4250m3. Vortex 10” Box Fan - 4250m3. Vortex 10” Box Fan (2 in 1 out) - 4250m3. Vortex 12” Box Fan - 4250m3. Vortex 12” Box Fan (2 in 1 out) - 4250m3. The Vortex Box Fans are wooden insulated fans manufactured from the highest quality materials and to exemplary standards.
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