The Flemoon extension cord safety cover works with 18-16-14-12 gauge extension cord, as well as flat cable and braided wire. It has large housing and can protect most of right-angle plugs, power adapters, transformers and more cord connections. Size: 11.4 x 4.3 x 3 inch Compatibility: Straight and right-angle plugs 18-12 gauge extension cord and flat cable Waterproof: IP44 Material: Reinforced PP Color: Black Package Quantity: 1 Installation: To avoid electric shock, turn OFF the power switch before installation. Step 1: Open the cover with the snap-lock lid and 4 corner clips. Step 2: Place the cord connection and fasten the cord with the clamps. Step 3: Close the cover with the 4 corner clips and snap-lock lid. Step 4: Place the cover properly for protection. Note: 1- To seal the flat cord, place the smaller rubber gaskets above the standard ones. 2- To hang the cover, place the hanger above the rubber gasket and close the cover. CAUTION: - Turn off the power switch before handling the cover. - Do not bury the cover. - Do not submerge the cover in water. - To avoid breaking the seal, do not place more than one cable in each port. - Store the cover indoor while not in use. Warranty: 100% satisfaction guarantee 45-day money-back 18-month hassle-free replacement