7 wide inches by 42 inches long. Use any 6 inch wide rockwool slab.
Great for use with rockwool slabs. Also come with its own plumbing parts (pictured below). Drain back to a center reservoir though tubes or pipe.
Price: $14.84 / each Estimate Shipping · Price Match
List Price: $16.62 You Save: $1.78 (10.7%)
— Ships separately from Portland, Oregon USA.