Convex Lid Design The convex lid can resist water holding. Rubber Gaskets The rubber seals wrap the extension cord tightly preventing the water entering. Lockable Clips The 4 double locks are durable and reliable, which can avoid accidental opening. Cable Clamps Fix the extension cord tightly avoid shaking. Is this large outdoor electrical box waterproof? IP54 waterproof which can withstand rain, snow, water, dust, dirt. 3 tips to protect outdoor plugs from water. Place it horizontal to the ground. Wrap the extension cord tightly with the rubber seals. Do not bury the box or submerge it in water. Are lockable clips fragile and easily broken? No, our waterproof boxes are made of heavy-duty reinforced PP material, which is industrial grade. It is strong and durable for daily use. Is it compatible with my outdoor connections? There are 3 sizes. Large 12.5 x 8.5 x 5inch, medium 11.4 x 4.3 x 3inch, small 7.1 x 2.3 x 2.3inch. Whatever you want to protect your straight plug, right angle plug, outdoor timer, power strip or other bulky adapters, you can find a suitable one. Outdoor Connection Protection Series Outdoor Electrical Box Buying Options Electrical Cord Cover Buying Options Clear Lid Electrical Box Buying Options Electrical Connection Box Add to Cart Customer Reviews 4.6 out of 5 stars 3,849 4.5 out of 5 stars 8,541 4.6 out of 5 stars 3,849 4.4 out of 5 stars 797 Price $22.94$22.94 $15.29$15.29 $28.04$28.04 $16.99$16.99 Dimension (inch) 12.5 x 8.5 x 5 inch 7.1 x 2.3 x 2.3 inch 12.5 x 8.5 x 5 inch 11.4 x 4.3 x 3 inch Compatibility Wire 16-12AWG cord 18-14AWG cord 16-12AWG cord 18-12AWG cord For Straight Plug ✔ ✔ ✔ ✔ For Right-angle Plug ✔ ✘ ✔ ✔ For Power Strip ✔ ✘ ✔ ✘ For Other Bulky Adapters ✔ ✘ ✔ ✘ Waterproof ✔ ✔ ✔ ✔ Multiple Sizes and Colors for Wide Applications Large 12.5 x 8.5 x 5 inch Medium 11.4 x 4.3 x 3 inch Small 7.1 x 2.3 x 2.3 inch