SUNPACK® SUNPAD™ Pro Commercial Heat Mat — 21 in x 60 in

Master Unit for Daisy-Chained Commercial Greenhouse Bench Heating

The SUNPACK SUNPAD Pro Commercial Heat Mat is a large-format, 21in x 60in bottom-heat mat built for greenhouse benches and other commercial propagation runs rather than a single seed tray. As the master unit in a daisy-chain system, it can power up to four SUNPAD Pro Add-On mats (item SPPSP10160, sold separately) from one power connection, extending heated bench coverage without adding a second outlet for every additional mat.

Commercial nurseries and greenhouse propagation rooms often need heated bench coverage that runs well beyond a single mat's footprint, and running a separate outlet to every mat quickly becomes impractical. The master-and-add-on design solves that by putting the single power connection on the master unit and letting each add-on draw power through the chain instead.

Key Features & Benefits

• 21in x 60in commercial format — Covers a full greenhouse bench section in a single mat rather than several small mats pieced together.
• Daisy-chain master unit — Powers up to 4 SUNPAD Pro Add-On mats (SPPSP10160, sold separately) from this one unit's power connection.
• Root-zone bottom heat — Warms the growing medium above ambient temperature to speed germination and rooting across the full mat area.
• Waterproof commercial-grade construction — Built to stand up to the frequent overhead watering and heavy bench traffic typical of commercial propagation.
• Temperature controller compatible — Works with SUNPACK heat mat temperature controllers for growers who want to set a precise root-zone target.

Who Should Use This

Commercial greenhouse operations and nurseries that propagate at bench scale, rather than in a handful of trays, are the intended user for the SUNPAD Pro Commercial line. The master unit is the starting point for any installation and is required before add-on units can be connected.

Expanding Your System

Order the SPPSP10160 Add-On separately for each additional 21in x 60in section needed beyond this master unit, up to four add-ons per master. Lay units end to end along the bench so the heated surface reads as one continuous run rather than separate mats.

Frequently Asked Questions

How many add-on units can connect to one master?

Up to four SUNPAD Pro Commercial Add-On units (SPPSP10160) can be daisy-chained to a single master unit. That combination covers roughly 105 linear feet of heated bench from one power connection.

Does the master unit need to be ordered with add-ons, or can it run alone?

The master unit runs on its own and heats its own 21in x 60in section without any add-ons connected. Add-ons are optional and only needed when a grower wants to extend heated coverage further down the bench.

What happens if I need more than four add-ons of coverage?

A single master supports a maximum of four add-on units. For benches longer than that combined run, install a second master-and-add-on chain rather than exceeding one master's rated add-on count.

When should I choose the Pro Commercial line instead of the SUNPAD Lite mats?

The Pro Commercial line is sized for continuous greenhouse bench coverage and daisy-chain expansion, while the SUNPAD Lite mats are sized for individual trays or flats. Choose Pro Commercial for bench-scale propagation runs and Lite mats for tray-by-tray seed starting or cloning.

Is this mat compatible with a temperature controller?

Yes. The SUNPAD Pro Commercial Heat Mat works with SUNPACK heat mat temperature controllers for growers who want to hold an exact root-zone temperature rather than run at a fixed output.