Review on 🔳 White Circular Non Slip Inspection Hatch w/Detachable Cover - SEA FLO 4-8 inch by Lild Zimmerly

Fair price and fast delivery. Required opening 4.5 inches (inside diameter of inspection cover 4.0 inches). I had to buy a hole saw, which cost more than two covers, but I knew that beforehand and wanted the cleanest possible hole, not a jigsaw. Filled with silicone - total installation time is approximately 30 minutes. First, I drilled a 1/4" diameter hole and used a bent wire to check the 4.5" diameter below the deck for any possible obstructions or structural features. Perimeter screws were not included, I would recommend #8 pan head sheet metal screws - I used 3/4" long - my soundboard is about 1/2" thick.