They also feature verticle flutes

BODY-ADD ON LESS SPOUT

It also features predrilled holes to allow lagging to the floor

No set-up required - unfold and the sidewalls automatically spring into their vertical position

Notrax Indoor Entrance Mat, 4 ft L, 3 ft W, 5/16 in Thick, Rectangle, Blue - 109S0034BU Width-16" They also feature verticle flutesEntrance Mat; Mat Color: Blue; Mat Width: 3 ft; Mat Length: 4 ft; Mat Shape: Rectangle; Mat Environment: Indoor; Mat Surface Pattern: Ribbed; Mat Weaving: Needle Punch; Mat Surface Material: Polypropylene; Mat Backing Material: Vinyl; Mat Thickness: 5 16 in; Edges: Beveled; Legend: No Legend; Antimicrobial: No; Oil Resistant: No; Flame Resistant Fire Retardant: Not Flame Resistant or Fire Retardant; Mat Electrical Resistance: Electrical Properties Not