Outdoor or Indoor
S-Hook For Plastic Chain Barrier, White, 2 93/100 In Length, Gloss, 80301-10
A nice touch is the see-through plastic window that lets you check levels at a glance.
S-Hook For Plastic Chain Barrier, Red, 2 3/10 In Length, Gloss, 50305-10
What stands out is the tapered plastic shape that allows for nested storage when empty.