CleanSeam™ Pass-Through Chambers. Double Stacked Stainless Steel CleanSeam Pass-Thru Chambers. Floor-Mount CleanSeam™ Pass-Through, 36''W x 36''D x 48''H, with Cart Ramps. CleanSeam™ Pass-Through Chamber, 18"W x 18"D x 18"H. Floor-Mount CleanSeam™ Pass-Through, 24''W x 24''D x 36''H, with Cart Ramp. Video introduction to pass-through