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- 🧊 Build Your Perfect MRCOOL Mini Split System
Instantly build your custom DIY mini-split package — choose wall or cassette heads, Quick Connect lines, and get pricing on the spot.
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![4.5" Flex Adapter – Connect Flex Elbows to 4.5" Channels]()
![4.5" Flex Adapter – Connect Flex Elbows to 4.5" Channels]()
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![4.5" Interior 90 (Vertical Inside 90) for Inside Corners – Seamless One-Piece Design]()
![4.5" Interior 90 (Vertical Inside 90) for Inside Corners – Seamless One-Piece Design]()
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![4.5" Long Sweep for 90° Wide Bend – Durable and UV Resistant]()
![4.5" Long Sweep for 90° Wide Bend – Durable and UV Resistant]()
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![4.5" Soffit Inlet for Line Set Cover Systems – Available in Gray, White, and Brown]()
![4.5" Soffit Inlet for Line Set Cover Systems – Available in Gray, White, and Brown]()
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![4.5" TEE Fitting for Line Set Cover Systems – Available in Gray, White, and Brown]()
![4.5" TEE Fitting for Line Set Cover Systems – Available in Gray, White, and Brown]()
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![4.5" Wall Flange for Flexible Elbow Attachments – Available in Gray, White, and Brown]()
![4.5" Wall Flange for Flexible Elbow Attachments – Available in Gray, White, and Brown]()
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![4.5" Wall Inlet for Line Set Covers – Top or Bottom Application]()
![4.5" Wall Inlet for Line Set Covers – Top or Bottom Application]()
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![4.5" Wide Flat 90° Elbow – Seamless and UV Resistant]()
![4.5" Wide Flat 90° Elbow – Seamless and UV Resistant]()
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![4.5" Wide x 36" Long Large Flex Elbow – Durable, Flexible, and UV Resistant]()
![4.5" Wide x 36" Long Large Flex Elbow – Durable, Flexible, and UV Resistant]()
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![4.5" Wide x 78" Long Channel Base and Cover – Multi-Zone Compatible and Durable]()
![4.5" Wide x 78" Long Channel Base and Cover – Multi-Zone Compatible and Durable]()
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GWIN is the newcomer that overdelivers—great SEER/SEER2 efficiency, clean R32 refrigerant, and long factory warranties for real peace of mind. Solid performance, with DIY options when you want to save on install.
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