Product Type Venting For Gas Heaters, Compatible with Product Type Unit Heaters, Compatible Grainger Part Number 32V246, 32V247, 32V248, 32V249, 32V250, 32V251, 32V255, 32V256, 32V257, 32V258, 32V259, 32V260, Compatible Mfr. Model Number 32V246, 32V247, 32V248, 32V249, 32V250, 32V251, 32V255, 32V256, 32V257, 32V258, 32V259, 32V260, Opening Width 5 in, Opening Depth 5 in, Mounting Type Surface, Vent Direction Horizontal, Vent Diameter 5 in, Vent Size 5 in, Vent Type Intake/Vent Concentric Y