Our premium quality post caps are practical by day, breathtaking by night. Waterproof, weatherproof, salt air resistant, and extremely durable, DEKOR® post caps are suitable for deck, dock and fence posts, providing years of maintenance free beauty. Post cap dimensions are square inside dimension. Our lighted post caps are a great deck lighting solution for homeowners who appreciate quality, functionality, and value when they buy for their home. They: protect deck posts from the elements (and rot, cracking, weathering) enhance the appearance of your deck (we offer a full suite of color coordinated deck and deck lighting products) use long lasting CREE LED lights (no frequent bulb changes) use LEDs that are 15 times more energy efficient than incandescent lighting!) protect your investment with a 30/10 year warranty add subtle safety and security lighting to your home without drawing more flying insects (LED lights don’t emit heat) and add ambience and a warm, welcoming glow to your deck, dock or back yard, perfect for relaxing after hours! The Toughest Post Caps. DEKOR® post caps are the toughest, most durable post caps in the world. You can run them over with a truck and they still remain intact and unharmed. In real world terms, DEKOR® heavy duty aluminum post caps will endure hurricanes, hail, and more. When insurance companies fill insurance claims for hail damage, they insist on replacement post caps from DEKOR®. 5 Lighting Options. Post caps in each size are available in 5 lighting configurations … or no lights at all.