{"product_id":"d3-5-75-x-4-375-grommet-pad-lh","title":"1\/4\" Thick 5.75\" x 4.375\" D-Pipe Aluminum Grommet Pad | Left Hand | D3 Profile | Marine Grade 6061-T6","description":"\u003cp style=\"font-size:1.15em;line-height:1.4;margin-bottom:0.75em;text-transform:none;color:#4a7ab5\"\u003e\u003cstrong\u003eLeft-Hand Grommet Pad for D3 D-Profile Pipe\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-weight:400;font-size:0.9em\"\u003e1\/4\" (0.250\") thick marine-grade 6061-T6 aluminum grommet pad designed to wrap around D3 D-profile pipe. Through-holes with grommet inserts provide galvanic isolation between stainless hardware and the aluminum substrate while distributing fastener loads over a wider surface area to prevent deck damage. The 5.75\" x 4.375\" rectangular profile with a 3\" × 1.875\" D-cutout contour matches D3 pipe geometry. Left-hand orientation — pair with \u003ca href=\"\/products\/d3-5-75-x-4-375-grommet-pad-rh\" style=\"color:#4a7ab5;text-decoration:underline\"\u003eSKU 00154-R\u003c\/a\u003e for symmetrical port\/starboard installations.\u003c\/p\u003e\n\u003ctable style=\"font-size:0.9em\"\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#1a1a1a;text-transform:none;color:#ffffff\"\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"font-weight:400\"\u003eMarine Grade 6061-T6 Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#1a1a1a;text-transform:none;color:#ffffff\"\u003e\u003cstrong\u003eOverall Length\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"font-weight:400\"\u003e5.75\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#1a1a1a;text-transform:none;color:#ffffff\"\u003e\u003cstrong\u003eWidth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"font-weight:400\"\u003e4.375\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#1a1a1a;text-transform:none;color:#ffffff\"\u003e\u003cstrong\u003eThickness\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"font-weight:400\"\u003e1\/4\" (0.250\")\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#1a1a1a;text-transform:none;color:#ffffff\"\u003e\u003cstrong\u003eD-Cutout\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"font-weight:400\"\u003e3\" × 1.875\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#1a1a1a;text-transform:none;color:#ffffff\"\u003e\u003cstrong\u003eCorner Radius\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"font-weight:400\"\u003eR 3\/16\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#1a1a1a;text-transform:none;color:#ffffff\"\u003e\u003cstrong\u003ePipe Profile\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"font-weight:400\"\u003eD3 D-Profile\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#1a1a1a;text-transform:none;color:#ffffff\"\u003e\u003cstrong\u003eMounting Holes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"font-weight:400\"\u003e3 through-holes Ø 3\/8\" with grommet inserts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#1a1a1a;text-transform:none;color:#ffffff\"\u003e\u003cstrong\u003eOrientation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"font-weight:400\"\u003eLeft Hand\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#1a1a1a;text-transform:none;color:#ffffff\"\u003e\u003cstrong\u003ePairs With\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"font-weight:400\"\u003e\n\u003ca href=\"\/products\/d3-5-75-x-4-375-grommet-pad-rh\" style=\"color:#4a7ab5;text-decoration:underline\"\u003eSKU 00154-R\u003c\/a\u003e (Right Hand)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#1a1a1a;text-transform:none;color:#ffffff\"\u003e\u003cstrong\u003eFinish\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"font-weight:400\"\u003eMatte — paint\/powder coat ready\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"background-color:#1a1a1a;text-transform:none;color:#ffffff\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"font-weight:400\"\u003e0.388 lb\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003cp style=\"text-transform:none;font-weight:600;font-size:1.05em;color:#4a7ab5\"\u003eCommon Applications\u003c\/p\u003e\n\u003cp style=\"font-weight:400;font-size:0.9em\"\u003eT-top leg mounts, tower installations, center console hard tops, radar arch mounts, and offshore fiberglass structures where D-profile pipe needs a grommeted mounting surface with galvanic isolation.\u003c\/p\u003e\n\u003cp style=\"text-transform:none;font-weight:600;font-size:1.05em;color:#4a7ab5\"\u003eFrequently Asked Questions\u003c\/p\u003e\n\u003cp style=\"font-weight:400;font-size:0.9em\"\u003e\u003cstrong\u003eWhat does a grommet pad do?\u003c\/strong\u003e\u003cbr\u003eA grommet pad wraps around D-profile pipe with 3 through-holes Ø 3\/8\" that accept grommet inserts. The inserts provide galvanic isolation between stainless steel hardware and the aluminum deck substrate while distributing fastener loads to prevent cracking or damage to the fiberglass.\u003c\/p\u003e\n\u003cp style=\"font-weight:400;font-size:0.9em\"\u003e\u003cstrong\u003eWhat does \"Left Hand\" mean?\u003c\/strong\u003e\u003cbr\u003eLeft-hand orientation means this pad mirrors the right-hand version (SKU 00154-R). Pair both for symmetrical port\/starboard installations on T-tops and towers.\u003c\/p\u003e\n\u003cp style=\"font-weight:400;font-size:0.9em\"\u003e\u003cstrong\u003eWhat does D3 mean?\u003c\/strong\u003e\u003cbr\u003eD3 refers to the D-profile pipe size this pad matches — a 3\" wide D-shaped aluminum profile commonly used in T-top and tower construction.\u003c\/p\u003e\n\u003cp style=\"font-weight:400;font-size:0.9em\"\u003e\u003cstrong\u003eHow is this different from an internal mounting pad?\u003c\/strong\u003e\u003cbr\u003eAn internal mounting pad welds inside the pipe with tapped holes for invisible fastener installation. This grommet pad mounts on the outside of the pipe with through-holes and grommet inserts, providing galvanic isolation and external fastener access.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Product\",\"name\":\"1\/4\\\" Thick 5.75\\\" x 4.375\\\" D-Pipe Aluminum Grommet Pad | Left Hand | D3 Profile | Marine Grade 6061-T6\",\"sku\":\"00154-L\",\"mpn\":\"00154-L\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Welding World\"},\"description\":\"1\/4\\\" (0.250\\\") thick 5.75\\\" x 4.375\\\" 6061-T6 aluminum grommet pad for D3 D-profile pipe. Left hand. Galvanic isolation with grommet inserts. Pairs with SKU 00154-R.\",\"material\":\"Aluminum 6061-T6\",\"category\":\"Watercraft Parts and Accessories \u003e Boat Hardware\",\"offers\":{\"@type\":\"Offer\",\"price\":\"16.00\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"itemCondition\":\"https:\/\/schema.org\/NewCondition\"}},{\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What does a grommet pad do?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A grommet pad wraps around D-profile pipe with through-holes and grommet inserts that provide galvanic isolation between stainless hardware and aluminum, distributing fastener loads to prevent fiberglass damage.\"}},{\"@type\":\"Question\",\"name\":\"What does Left Hand mean?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Left-hand orientation mirrors the right-hand version. Pair both for symmetrical port\/starboard installations.\"}},{\"@type\":\"Question\",\"name\":\"What does D3 mean?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"D3 is a 3 inch wide D-shaped aluminum pipe profile used in T-top and tower construction.\"}},{\"@type\":\"Question\",\"name\":\"How is this different from an internal mounting pad?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Internal mounting pads weld inside the pipe with tapped holes for invisible installation. Grommet pads mount on the outside with through-holes and grommet inserts for galvanic isolation and external fastener access.\"}}]}]}\n\u003c\/script\u003e","brand":"Welding World, Inc.","offers":[{"title":"Default Title","offer_id":42976212222013,"sku":"00154-L","price":16.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0494\/7717\/files\/00154-L.png?v=1779211517","url":"https:\/\/weldingworldinc.com\/products\/d3-5-75-x-4-375-grommet-pad-lh","provider":"Welding World, Inc.","version":"1.0","type":"link"}