View 3 of Dial Manufacturing 78317 18" X 18" Multi-Pitch Roof Jack For 3000 - 4500 Cfm Residential Down Draft Coolers

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View 1 of Dial Manufacturing 78317 18" X 18" Multi-Pitch Roof Jack For 3000 - 4500 Cfm Residential Down Draft Coolers View 2 of Dial Manufacturing 78317 18" X 18" Multi-Pitch Roof Jack For 3000 - 4500 Cfm Residential Down Draft Coolers View 3 of Dial Manufacturing 78317 18" X 18" Multi-Pitch Roof Jack For 3000 - 4500 Cfm Residential Down Draft Coolers View 4 of Dial Manufacturing 78317 18" X 18" Multi-Pitch Roof Jack For 3000 - 4500 Cfm Residential Down Draft Coolers