Zoom icon Click to expand Tap to zoom Chevron down icon Chevron down icon MRCOOL Downflow Kit, MSHDK3660 SKU by MRCOOL Authorized Dealer Official 100% Authentic Guarantee In stock, ready to ship Save $-186.00 $186.00 | / Estimated Shipping Widget will be displayed here! 1 2 3 4 5 6 7 8 9 10+ Quantity Chevron down icon Quantity Add to cart Spinner icon This item is a recurring or deferred purchase. By continuing, I agree to the cancellation policy and authorize you to charge my payment method at the prices, frequency and dates listed on this page until my order is fulfilled or I cancel, if permitted. Notify me when back in stock Email address Email me when available MRCOOL Accessories Previous items MRCOOL 10 KW Heat Strip with Circuit Breaker for Packaged Units, MHK10P Add to Cart MRCOOL 10 KW Signature Air Handler Heat Strip with Circuit Breaker, MHK10H Add to Cart MRCOOL 10 KW Universal Air Handler Heat Strip with Circuit Breaker, MHK10U Add to Cart MRCOOL 10kW Heat Kit for Central Ducted VersaPro® & Hyper Heat 2nd Gen Air Handler, MVPHK10 Add to Cart MRCOOL 10kW Heat Kit for the Central Ducted Air Handler (Compatible with MRCOOL Hyper Heat & VersaPro Series), CENTRALHK10 Add to Cart MRCOOL 16FT 1/4" x 1/2" Flared Line Set Kit for 12K and 18K Olympus and Advantage Mini Split, MC16-1412 Add to Cart MRCOOL 16FT 1/4" x 3/8" Flared Line Set Kit for 9K Olympus and Advantage Mini Split, MC16-1438 Add to Cart MRCOOL 16FT 3/8" x 5/8" Flared Line Set Kit for 24K Olympus and Advantage Mini Split, MC16-3858 Add to Cart MRCOOL 25FT 1/4 x 1/2 Flared Line Set Kit for 12K and 18K Olympus and Advantage Mini Split, MC25-1412 Add to Cart MRCOOL 25FT 1/4 x 3/8 Flared Line Set Kit for 9K Olympus and Advantage Mini Split, MC25-1438 Add to Cart MRCOOL 25FT 3/8 x 5/8 Flared Line Set Kit for 24K Olympus and Advantage Mini Split, MC25-3858 Add to Cart MRCOOL 3/4 Flare-to-Weld Fitting, WF-34 Add to Cart MRCOOL 3/8 Flare-to-Weld Fitting, WF-38 Add to Cart MRCOOL 3/8 No-Vac Coupler + 3/4 No-Vac Coupler for Central Ducted and Universal Series, NVCOUPLER-3834 Add to Cart MRCOOL 5 KW Heat Strip with Circuit Breaker for Packaged Units, MHK05P Add to Cart MRCOOL 5 KW Signature Series Modular Blower Heat Strip with Circuit Breaker, MHK05B Add to Cart MRCOOL 5 KW Universal Air Handler Heat Strip with Circuit Breaker, MHK05U Add to Cart MRCOOL 5kW Heat Kit for Central Ducted VersaPro® & Hyper Heat 2nd Gen Air Handler, MVPHK05 Add to Cart MRCOOL 5kW Heat Kit for the Central Ducted Air Handler (Compatible with MRCOOL Hyper Heat & VersaPro Series), CENTRALHK05 Add to Cart MRCOOL 5kw ProDirect Heat Kit, PHK05H Add to Cart MRCOOL 7.5 KW Heat Strip with Circuit Breaker for Packaged Units, MHK07P Add to Cart MRCOOL 7.5 KW Signature Air Handler Heat Strip with Circuit Breaker, MHK07H Add to Cart MRCOOL 7.5 KW Signature Series Modular Blower Heat Strip with Circuit Breaker, MHK07B Add to Cart MRCOOL 8 KW Universal Air Handler Heat Strip with Circuit Breaker, MHK08U Add to Cart MRCOOL 8kW Heat Kit for Central Ducted VersaPro® & Hyper Heat 2nd Gen Air Handler, MVPHK08 Add to Cart MRCOOL 8kW Heat Kit for the Central Ducted Air Handler (Compatible with MRCOOL Hyper Heat & VersaPro Series), CENTRALHK08 Add to Cart MRCOOL Bluetooth Mini-Stat Thermostat for Ductless Mini Split in White, MTSK02 Add to Cart MRCOOL Condenser Wall Mounting Kit for 24k to 36k BTU Ductless Split System, MB440A Add to Cart MRCOOL Condenser Wall Mounting Kit for 9k to 18k BTU Ductless Split System, MB176 Add to Cart MRCOOL DIYCOUPLER-14 + DIYCOUPLER-12 w/50 ft of Communication Wire, DIYCOUPLER-1412K50 Add to Cart MRCOOL DIYCOUPLER-38 + DIYCOUPLER-58 (Two Sets) w/75 ft of Communication Wire, DIYCOUPLER-3858K75 Add to Cart MRCOOL DIYCOUPLER-38 + DIYCOUPLER-58 w/50 ft of Communication Wire, DIYCOUPLER-3858K50 Add to Cart MRCOOL Downflow Application 14 In. Square to Round Adaptor Kit for 2-3 Signature Packaged Units, M14DSR4260A Add to Cart MRCOOL Downflow Kit, MSHDK1830 Add to Cart MRCOOL Downflow Kit, MSHDK3660 Add to Cart Next items FREE EXPRESS SHIPPING Process orders in 1 business day STRESS FREE RETURNS 2 Year Returns Primum Quality Top Tier Products, Even Better Customer Care 5 Year Warranty We Believe In Our Products & Our Team DescriptionProduct OverviewShipping and ReturnRequest A QuoteDescriptionKEY FEATURES Downflow Kit for Signature Series PRODUCT SPECIFICATIONS: Product Dimensions 25"W x 30"D x 7"H Equipment Type Downflow Kit Color Combination Pack Registered Warranty N/A Proposition 65 Warning Yes Restricted States GU PR;VI Weight 11 lbs Freight Class 250 Product Brochure Product OverviewShipping and ReturnFor Shipping & return information visit hereRequest A Quote Request a Personalized Quote Please complete the form below, and our team will prepare a customized quote for your project within 24-48 business hours. Contact Information Full Name* Company Name Email Address* Phone Number Project Information Project Title* Project Specifications & Requirements* Please include as much detail as possible about your project goals, deliverables, and specific requirements. Budget Range Desired Completion Date Additional Information Any other details that would help us prepare an accurate quote for your project. I agree to the Privacy Policy and consent to being contacted regarding my quote request.* Submit Quote Request Fields marked with * are required. MRCOOL Downflow Kit, MSHDK3660 Reviews Product Overview Zone / ROOM: Air Handler BTU: Coverage Area: Condenser BTU: Outdoor Operating Temp (Cool/ heat): Warranty Frequently Asked Questions About MRCOOL Downflow Kit, MSHDK3660 Most Frequently Asked Questions Other Questions Latest from HVAC & More What is An AC Condenser Unit? Read more Minimum Distance from the Wall to Place AC Condenser Unit Read more How to Clean AC Condenser Read more Read about HVAC Close icon Checkmark icon Added to your cart: ** total_quantity ** | ** unit_price ** / ** unit_measure ** Cart subtotal Close icon Close icon Chevron down icon Chevron down icon