F TO B BETWEEN POSTS IS 10”. 16” SINGLE-ACTING RAM. DAYLIGHT WITHOUT PLATENS IS 12”. APPROX. 8” STROKE. 4” DIAMETER POSTS. 38” OPERATOR HEIGHT. HALF-SURROUND GUIDES. 2” NPT 4-BOLT FLANGE PORT. OVERALL DIMENSIONS: 48” X 36” X 65” TALL. QTY. OF 12. (ITEM #129)