The MRCOOL square-to-round adapter kit is a pair of galvanized steel transitions that fasten over the square supply and return openings on a MRCOOL packaged unit and finish each one in a round collar. Round or flexible duct then slides over the collar and is clamped in place.
It is offered in two sizes, M14SR2436 and M14SR4260. MRCOOL does not publish a unit-by-unit fit list, so match the kit to the supply and return openings in your packaged unit's installation manual before ordering. Installation is by a licensed HVAC contractor. This is MRCOOL's square-to-round adapter kit.
Features
Supply and Return Pair
Two adapters per kit, one for each side-discharge opening.
Two Cabinet Sizes
M14SR2436 and M14SR4260, sized for MRCOOL's two packaged cabinet openings; check your unit's manual for the opening size.
Round Duct Collars
Each adapter ends in a round collar that takes round or flexible duct.
Galvanized Steel
Plain galvanized sheet metal, the same finish as standard duct fittings.
Bolts to the Cabinet
A square flange on each adapter fastens over the unit's duct opening.
Specifications
M14SR2436
M14SR4260
What's Included
- MRCOOL square-to-round duct adapters, supply and return (pair), in the selected size
Installation
Professional installation required. This equipment must be installed by a licensed HVAC contractor (EPA Section 608-certified for any refrigerant work), following MRCOOL's installation manual and all local codes, permits and licensing rules. MRCOOL's limited warranty applies only to units installed that way, and it does not cover installation labor.
Confirm the kit against the supply and return opening sizes in the packaged unit manual. Fasten each adapter over its opening, seal the joint to the cabinet with code-approved sealant or tape, and clamp the duct to the collar. Follow the duct clearance rules in the packaged unit manual.
Shipping, Returns & Warranty
Ships to addresses in the United States only. Shipping cost is calculated at checkout.
Inspect the packaging and the product before you sign. Note any damage or shortage on the delivery receipt, then email photos to support@mycleansupplies.com within 48 hours of delivery so the freight claim can be filed. Damage reported after 48 hours can't be claimed.
MRCOOL handles returns through the store you bought from, so your return comes to us. Unopened, unused MRCOOL equipment can be returned within 21 days of delivery with a return authorization from us. You pay the return shipping, and a restocking fee of up to 20% may be deducted along with payment processing fees. Opened, installed or used equipment and special-order items can't be returned.
MRCOOL publishes no warranty document that names this part, and none of the warranty documents we hold lists it; ask MRCOOL for the terms that apply with your system.
Warranty claims. MRCOOL handles warranty claims directly through support.mrcool.com or (270) 366-0457. Some MRCOOL warranties cover the original purchaser only. Systems that aren't DIY need a valid installation invoice to open a claim.
About MRCOOL
MRCOOL designs heating, cooling and water-heating equipment from its home base in Hickory, Kentucky. The range runs from DIY ductless mini-splits, built around MRCOOL's patented pre-charged Quick Connect line sets, through contractor-installed mini-splits, central split systems, packaged units and gas furnaces, to HeatWise water heaters and CoolBlade HVLS fans for warehouses and shops.
MRCOOL's square-to-round adapter kits fit the rectangular supply and return openings on MRCOOL packaged units, giving each opening a round collar for flexible or round duct. There are two kits, one for 2-ton to 3-ton cabinets and one for 3.5-ton to 5-ton cabinets.
