{"product_id":"coleman-8330a743-ducted-rv-ac-air-distribution-box","title":"Coleman 8330A743 Lateral Ducted Air Distribution Box, White","description":"\u003cp class=\"nvn-hero\"\u003eThe Coleman 8330A743 is the lateral ducted air distribution box that mounts on your RV ceiling below the rooftop air conditioner. It channels cold air into your coach's overhead duct runs for even cooling end to end. Cool only, 24V, built for wall-thermostat systems, and made for the standard 14 inch by 14 inch vent opening.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThe Coleman 8330A743 is the lateral ducted air distribution box that lives on your RV ceiling, right below the rooftop air conditioner. It's the interior half of a ducted system, the part that takes the cold air coming down from the roof unit and pushes it out into the overhead duct runs that carry it through the coach. If your RV runs a wall thermostat instead of a ceiling-mounted control, this is the box built for that setup.\u003c\/p\u003e\n\u003cp\u003eDucted versus non-ducted matters here. A non-ducted ceiling assembly dumps air straight down into one open space. This one is lateral ducted, which means it feeds the network of ducts running through your ceiling so cold air reaches the bedroom, the bathroom, and the far end of the coach, not just the spot under the unit. That's the difference between one cold room and a rig that cools evenly.\u003c\/p\u003e\n\u003cp\u003eIt's a cool-only box, so it's matched to air-conditioning units without a heat strip or heat pump. The control side runs on 24V and expects a wall-mounted thermostat, the kind you set once and forget. No ceiling knobs to reach up and fiddle with. And because the thermostat sits at eye level, it's a cleaner setup to live with day to day.\u003c\/p\u003e\n\u003cp\u003eFitment is straightforward. It's made for the standard 14 inch by 14 inch roof vent opening that most RVs are cut for, so it drops into the same hole a factory ducted unit uses. The white finish is molded to sit flush against a typical RV ceiling, so it blends in rather than standing out.\u003c\/p\u003e\n\u003cp\u003eThis is a replacement or service part for the interior distribution box, not the rooftop air conditioner itself and not the thermostat. If your old ducted box is cracked, yellowed, or the damper has given out, this is the piece that gets your ducted cooling back to full airflow. If you've got a non-ducted setup or a heat pump unit, this isn't the match, so check what your specific unit calls for before you order.\u003c\/p\u003e\n\u003cp\u003eWhy keep a ducted system working right? In a longer coach or a fifth wheel, ducted air is what makes the whole rig livable in July. The distribution box is the traffic controller. When it's healthy, cold air splits evenly down the runs. When the damper or the box body is damaged, you get uneven cooling, one room freezing while the back stays warm, and the compressor working harder than it should to keep up.\u003c\/p\u003e\n\u003cp\u003eThe 24V wall thermostat control is worth understanding if you're new to ducted RV AC. These systems separate the low-voltage control from the line-voltage unit. The thermostat on the wall sends a 24V signal, and the box and unit respond. This box is built specifically for that wiring, so if your rig already runs a wall thermostat, it's a straight match with no rewiring gymnastics.\u003c\/p\u003e\n\u003cp\u003eInstallation is within reach for most RV owners. Because it sits at the ceiling opening and ties into your duct runs, a clean install means a good seal at the opening and at the duct collars, so you're not bleeding cold air into the ceiling cavity. Basic hand tools do the job. Plan on a second set of hands to hold the box while you fasten it, and keep the return-air filter clean afterward so the airflow path stays open. Do that and a distribution box like this holds up for years of seasonal use.\u003c\/p\u003e\n\u003cp\u003eOne more thing worth checking before you buy. Ducted and non-ducted Coleman systems use different interior assemblies, and cool-only units use different controls than heat-pump units. This box is the cool-only, ducted, 24V wall-thermostat version. So match it to what your rooftop unit actually is, not just the brand on the shroud. Get that right and the swap is quick, the airflow comes back strong, and your ducted cooling does exactly what it did the day the rig left the factory.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003eLateral ducted design channels cold air through the RV's overhead duct runs for even cooling from front to back\u003c\/li\u003e\n  \u003cli\u003eFits the standard 14 in. x 14 in. roof vent opening, drops into the factory ducted cutout\u003c\/li\u003e\n  \u003cli\u003eCool only, matched to air-conditioning units without a heat strip or heat pump\u003c\/li\u003e\n  \u003cli\u003e24V control circuit built for wall-thermostat systems, no ceiling-mounted knobs\u003c\/li\u003e\n  \u003cli\u003eWhite molded housing sits flush against a typical RV ceiling\u003c\/li\u003e\n  \u003cli\u003eInterior air distribution box for ducted Coleman rooftop RV air conditioners\u003c\/li\u003e\n  \u003cli\u003eReplacement service part to restore full airflow when the old box is cracked or the damper fails\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Coleman reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat does the Coleman 8330A743 actually do?\u003c\/summary\u003e\n    \u003cp\u003eIt's the interior air distribution box for a ducted rooftop RV air conditioner. It takes cold air from the roof unit and channels it into your coach's overhead duct runs so it reaches every room, not just the space right under the unit.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill it fit my RV's roof opening?\u003c\/summary\u003e\n    \u003cp\u003eIt's made for the standard 14 inch by 14 inch vent opening most RVs are cut for. If your coach uses that factory opening for a ducted unit, this drops right in.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this the rooftop air conditioner itself?\u003c\/summary\u003e\n    \u003cp\u003eNo. This is the interior ceiling distribution box only. It works with the rooftop unit, it isn't a replacement for it.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes it heat?\u003c\/summary\u003e\n    \u003cp\u003eNo, it's a cool-only box. It's matched to air-conditioning units without a heat strip or heat pump.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat control does it use?\u003c\/summary\u003e\n    \u003cp\u003eIt's built for a 24V wall thermostat. If your rig already has a wall-mounted thermostat running the AC, this is the matching box.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDucted or non-ducted, which is this?\u003c\/summary\u003e\n    \u003cp\u003eDucted, lateral. It feeds your ceiling duct network. A non-ducted ceiling assembly, which blows straight down into one open space, is a different part.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I install it myself?\u003c\/summary\u003e\n    \u003cp\u003eMost RV owners can. It ties into the existing opening and duct collars, so plan on sealing those well. An extra set of hands helps hold the box while you fasten it.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat color is it?\u003c\/summary\u003e\n    \u003cp\u003eWhite, molded to sit flush against a standard RV ceiling.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eMy old box is cracked and airflow is uneven. Is this the fix?\u003c\/summary\u003e\n    \u003cp\u003eIf the distribution box body or its damper is damaged, that's exactly what causes uneven cooling. Replacing it restores the full airflow split down your duct runs.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eColeman 8330A743 Lateral Ducted Air Distribution Box, White\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eColeman\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e8330A743\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e755790201433\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Division\u003c\/th\u003e\n\u003ctd\u003eColeman RVP\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eComponent Type\u003c\/th\u003e\n\u003ctd\u003eCeiling Air Distribution Box\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eAir Distribution\u003c\/th\u003e\n\u003ctd\u003eLateral Ducted\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eVent Opening Compatibility\u003c\/th\u003e\n\u003ctd\u003e14 in. x 14 in.\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCooling Function\u003c\/th\u003e\n\u003ctd\u003eCool Only\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eControl Voltage\u003c\/th\u003e\n\u003ctd\u003e24V\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eThermostat Type\u003c\/th\u003e\n\u003ctd\u003eWall Thermostat Control\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eColor\u003c\/th\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What does the Coleman 8330A743 actually do?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's the interior air distribution box for a ducted rooftop RV air conditioner. It takes cold air from the roof unit and channels it into your coach's overhead duct runs so it reaches every room, not just the space right under the unit.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will it fit my RV's roof opening?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's made for the standard 14 inch by 14 inch vent opening most RVs are cut for. If your coach uses that factory opening for a ducted unit, this drops right in.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this the rooftop air conditioner itself?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. This is the interior ceiling distribution box only. It works with the rooftop unit, it isn't a replacement for it.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does it heat?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No, it's a cool-only box. It's matched to air-conditioning units without a heat strip or heat pump.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What control does it use?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's built for a 24V wall thermostat. If your rig already has a wall-mounted thermostat running the AC, this is the matching box.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Ducted or non-ducted, which is this?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Ducted, lateral. It feeds your ceiling duct network. A non-ducted ceiling assembly, which blows straight down into one open space, is a different part.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I install it myself?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Most RV owners can. It ties into the existing opening and duct collars, so plan on sealing those well. An extra set of hands helps hold the box while you fasten it.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What color is it?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"White, molded to sit flush against a standard RV ceiling.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"My old box is cracked and airflow is uneven. Is this the fix?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"If the distribution box body or its damper is damaged, that's exactly what causes uneven cooling. Replacing it restores the full airflow split down your duct runs.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Coleman","offers":[{"title":"Default Title","offer_id":45051867955293,"sku":"2008158","price":180.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_b7589288-f1eb-44c2-9e2e-972c8d8572f2.jpg?v=1789404986","url":"https:\/\/nvnmarine.com\/products\/coleman-8330a743-ducted-rv-ac-air-distribution-box","provider":"NVN Marine","version":"1.0","type":"link"}