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Continue to ChatJOUCOMATIC 449502020015 - 20mm Bore, 15mm Stroke, Double Acting, PEC20NAF0015DM, Series 449 Compact Cylinders (Type PEC) https://www.valves-direct.com/product/joucomatic-449502020015-20mm-bore-15mm-stroke-double-acting-pec20naf0015dm-series-449-compact-cylinders-type-pec/