Quick view Compare Add to Cart Cherne® 8in. Monitor Well™ Locking Plug, Sch40 In Stock Cherne® Monitor Well™ Locking Plugs feature a high-quality, petro-chemical resistant design to seal monitor wells and is sized to seal Sch. 40 pipe. Cherne sku 271735 Accepts #1 or #3 size padlock, brass dolphin lock, Koby Safety Lock-Out... MSRP: Was: Now: $141.30 VIEW PRODUCT