Genuine factory original equipment Marine Development Brand high-velocity anodized marine air conditioning cabin supply vent grille assembly (Model / MPN: 042499). This premium HVAC component safeguards your vessel's climate control and airflow operations by providing an exceptionally uniform, cool-cutting ventilation configuration designed to refine environmental comfort. Featuring a 10-inch by 6-inch nominal duct interface, it installs easily right onto your heavy-duty interior bulkheads, overhead headliners, or cabin cabinetry walls. Sourced from highly durable clear anodized aluminum alloy composites, this high-airflow grille provides ultra-smooth air dispersion and micro-finishing, protecting delicate compressor units and high-strength duct networks from dangerous backpressure-induced heat damage or surface glazing under rigorous continuous operational marine stress.

• Key Features: Specialized high-velocity louver structure for precision airflow direction, heavy-duty marine-grade anodized finish for extended salt-spray resistance, dependable thermal dispersion to prevent cabin sweat, and high-stability corrosion-free performance limits.
• Technical Specs: Brand: Marine Development Inc. / Cruisair | Part Number / MPN: 042499 | Type: High Velocity (HV) Supply Grille | Material / Finish: Anodized Aluminum | Nominal Duct Width: 10 Inches | Nominal Duct Height: 6 Inches | Mounting Profile: Flush/Recessed Cabin Wall Mount.
• Condition Notes: This item is in new, old stock (NOS) warehouse condition. The aluminum frame and fixed directional louvers are physically flawless with zero edge chips, hairline scratches, structural fractures, or salt-corrosion compromises. The mounting flange is completely clean and ready for direct installation.
• Installation Notes: Always perform a standard layout check by aligning the unmounted grille over the bulkhead cutout to verify exact structural clearance prior to fastening. Slide onto a matching 10" x 6" insulated duct box, ensuring the compressed boundary seals are placed securely on all sides of the frame against the mounting surface. Tighten the perimeter screws firmly enough to prevent rattling without over-torquing, position your directional louvers for optimal cross-cabin draft dispersion, and always run the system at full blower capacity for at least one minute to clear out line dust before adjusting local settings. Never restrict the maximum structural opening of this high-velocity assembly. Message with any questions!