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Aluminum manhole cover design advantages
1.Aluminum manhole covers and frames - Double seal design creates an aesthetically pleasing finish to any floor design, eliminating the need to display a solid metal manhole cover during renovation. 2.The recessed access cover features an aesthetically pleasing extruded aluminum structure, manufactured as standard, with a reinforcement mesh and lift key. 3.The Double Seal series features two sealing layers, a bottom T-shaped rubber seal to prevent odor and water, and also fixed to the outer frame. 4.The access cover features a unique T-shaped rubber seal that provides an additional anti-odor barrier and elasticity to avoid tension between the recessed cover and the frame to prevent dirt. 
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