ACEM products appear to have been made from a cement compound and as such are heavy. Made by A.C.E.M of Nottingham, and distributed by Edward Exley Ltd of Baslow.
Tunnel portal described as measuring approximately 9 3/8 inches high by 7 1/4 inches wide and 1 inch thick. The portal gap is 4 1/8 inches |

Another ACEM portal, with walling |
ACEM retaining walls, approx. 10 x 6 inches |

ACEM Tunnel Portal and Retaining (Wing) Walls |
ACEM Tunnel Portal and Retaining (Wing) Walls |
ACEM Tunnel Portal and Retaining (Wing) Walls |
ACEM Tunnel Portal and Retaining (Wing) Walls |
ACEM Tunnel Portal and Retaining (Wing) Walls |
ACEM Tunnel Portal and Retaining (Wing) Walls |
ACEM Tunnel Portal and Retaining (Wing) Walls |
ACEM Tunnel Portal and Retaining (Wing) Walls |
ACEM Tunnel Portal and Retaining (Wing) Walls |

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