{"product_id":"mastic-j-block-with-electrical-box-8-3-8-in-x-12-1-2-in-multiple-colors","title":"Mastic J-Block with Electrical Box, 8-3\/8 in. x 12-1\/2 in., Multiple Colors","description":"\u003ch1\u003eMastic J-Block with Electrical Box, 8-3\/8 in. x 12-1\/2 in., Multiple Colors\u003c\/h1\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eThis Mastic J-Block with electrical box is a siding mounting block, 8-3\/8 in. x 12-1\/2 in., that houses an outdoor electrical box behind siding. It comes in color 144 Misty Shadow, 498 and 803, sold per carton or each depending on color. It pairs with Mastic vinyl siding installations for mounting exterior lighting and outlets.\u003c\/strong\u003e\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eKey Features:\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated box:\u003c\/strong\u003e Combines a J-block mounting block with an electrical box for exterior fixtures and receptacles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSiding ready:\u003c\/strong\u003e Designed to mount on Mastic vinyl siding installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGenerous size:\u003c\/strong\u003e 8-3\/8 in. x 12-1\/2 in. face covers siding cuts and provides a solid mounting surface.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor choices:\u003c\/strong\u003e Offered in Misty Shadow (144) and two additional Mastic color codes, 498 and 803.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClean finish:\u003c\/strong\u003e Gives exterior lighting, outlets and fixtures a finished, weather-tight appearance.\u003c\/li\u003e\n\u003c\/ul\u003e\u003chr\u003e\u003ch2\u003eSpecifications Table:\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eDetails\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMastic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSell unit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCarton or each depending on color\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct line\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMastic siding accessories\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable colors\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e144 Misty Shadow, 498, 803\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAvailable sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8-3\/8 in. x 12-1\/2 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e8-3\/8 in. x 12-1\/2 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVinyl siding accessory\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIntended use\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMounting exterior electrical fixtures and outlets on siding\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003chr\u003e\u003ch2\u003eCoverage \u0026amp; How Much You Need:\u003c\/h2\u003e\u003cp\u003eNot applicable; each unit covers one mounting location for a fixture or outlet.\u003c\/p\u003e\u003ch2\u003eFit and Compatibility:\u003c\/h2\u003e\u003cp\u003eDesigned for use with Mastic vinyl siding. Electrical box, fixture and wiring supplies are field-provided; other Mastic J-channels and trim accessories are sold separately.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eFrequently Asked Questions (FAQ):\u003c\/h2\u003e\u003cp\u003e\u003cstrong\u003eQ: What is included?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e One J-block mounting block with an integrated electrical box in the selected color.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: What size is it?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e 8-3\/8 in. x 12-1\/2 in. in every color on this line.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Which colors are available?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e 144 Misty Shadow, 498 and 803.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: How is it installed?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e It is trimmed into the siding course at the fixture location, providing a finished opening and a mounting point for the electrical box.\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eQ: Is the electrical box included?\u003c\/strong\u003e\u003cbr\u003e\u003cstrong\u003eA:\u003c\/strong\u003e Yes, the J-block comes with an electrical box as part of the assembly.\u003c\/p\u003e\u003chr\u003e\u003ch2\u003eExpert Verdict — Reviewed by the SuperArbor Pro Desk\u003c\/h2\u003e\u003cp\u003eOrder the color code that matches your siding, and install the block in the same course layout so the trim reads as part of the wall. Provide an appropriately rated exterior-rated electrical box and seal per the fixture manufacturer's instructions. For heavier light fixtures, verify the backing behind the block can carry the load.\u003c\/p\u003e\u003cp\u003e\u003cem\u003eElectrical work should follow local code; have a licensed electrician make wiring connections.\u003c\/em\u003e\u003c\/p\u003e\u003chr\u003e\u003cp\u003e\u003cstrong\u003eGet a Mastic J-Block with electrical box color-matched to your siding for a clean exterior fixture install.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Mastic","offers":[{"title":"144 Misty Shadow \/ CTN","offer_id":53524006830447,"sku":"MASJMEBLOCK144","price":102.0,"currency_code":"USD","in_stock":true},{"title":"498 \/ EA","offer_id":53524006863215,"sku":"MASJMEBLOCK498","price":25.5,"currency_code":"USD","in_stock":true},{"title":"803 \/ EA","offer_id":53524006895983,"sku":"MASJMEBLOCK803","price":58.5,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0830\/3499\/7051\/files\/MASJMEBLOCK144_0.png?v=1790270306","url":"https:\/\/superarbor.io\/products\/mastic-j-block-with-electrical-box-8-3-8-in-x-12-1-2-in-multiple-colors","provider":"Super Arbor","version":"1.0","type":"link"}