Comparison : |
Item # 816P, 3 Inch (in) Aluminum Pneumatic Vapor Valve for 16 Inch (in) Man Hole Covers Item # 820P, 3 Inch (in) Aluminum Pneumatic Vapor Valve for 20 Inch (in) Man Hole Covers Item # 816P-RK, Repair Kit for 3 Inch (in) Aluminum Pneumatic Vapor Valve for 16 Inch (in) Man Hole Covers Item # 820P-RK, Repair Kit for 3 Inch (in) Aluminum Pneumatic Vapor Valve for 20 Inch (in) Man Hole Covers
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