Here's the purpose of the circle on the Glad salad container lid
Glad Food Storage Containers, Deep Dish, 64 Ounce, 3 Count – Chemi-3 Inc.
What This Woman Discovered About Glad Containers Will Make You Freak Out—Delish.com
Mini Round Food Storage Containers by Glad® CLO70240PK | OnTimeSupplies.com
Glad Food Storage Containers, To Go Lunch, 32 Ounce, 4 Count : Amazon.ca: Health & Personal Care
Glad Food Storage Containers, Soup and Salad, 24 Ounce, 5 Count : Amazon.ca: Home
Glad for Kids Unicorns GladWare to Go Storage Containers with Lids| 24 oz Kids Snack Containers with Unicorn Design, 4 Count Set with 4 Dressing or Sauce Cups : Amazon.ca: Home
Glad® Food Storage Containers - Seal Tight Containers | CloroxPro
Glad 38-oz Rectangular Food Container Pack of 25 | Costco
Glad 28-oz Rectangular Food Container, Pack of 25 | Costco
Glad Containers in Food Storage Containers - Walmart.com
FYI, The Lid On Your Glad Food Container Has A Secret Second Purpose | HuffPost Life
Glad Food Storage Containers | Standard Food Storage Containers from Glad for Storing Meals, Snacks, and Desserts | 5- Count Food Containers, 6 Pack (Total of 30 Containers) : Amazon.ca: Home
GladWare Soup & Salad Food Storage Containers for Everyday Use | Medium Rectangle Containers for Food Storage | Containers Hold up to 24 Oz(Pack of 5) Rectangle 24 oz - 5 Count
Glad Gladware Entree Plastic Square Containers with Lids, 25 Ounce, 5 Count (Pack of 1) : Amazon.ca: Home