Mainstays Thermal Lined Room Darkening Sliding Glass Door Grommet Curtain Panel, 100 in x 84 in, Black
Mainstays Thermal Lined Room Darkening Sliding Glass Door Grommet Curtain Panel, 100 in x 84 in, Black
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Mainstays Thermal Lined Room Darkening Sliding Glass Door Grommet Curtain Panel, 100 in x 84 in, Black

1,354 ratings
Mainstays Thermal Lined Room Darkening Sliding Glass Door Grommet Curtain Panel, 100 in x 84 in, BlackMainstays Sliding Glass Door Thermal Lined Room Darkening Grommet Curtain Panel 100 x 84Mainstays Sliding Glass Door Thermal Lined Room Darkening Grommet Curtain Panel 100 x 84 in RedMainstays Sliding Glass Door Thermal Lined Room Darkening Grommet Curtain Panel 100 x 84 in GrayMainstays Sliding Glass Door Thermal Lined Room Darkening Grommet Curtain Panel 100 x 84 in BrownMainstays Blackout Energy Efficient Extra Wide Sliding Glass Door Grommet Curtain Panel with Detachable Wand in Brownstone 100 x 84Mainstays Sliding Glass Door Thermal Lined Room Darkening Grommet Curtain Panel White 100 x 84Mainstays Sliding Glass Door Thermal Lined Room Darkening Grommet Curtain Panel 100 x 84 in Blue
Size100" W x 84" L
Actual ColorBlack

Key item features

  • Generous Coverage: A single black panel, measuring 100 inches wide by 84 inches long, offers extra-wide coverage for patio doors and large windows.
  • Optimal Darkness: Room-darkening design reduces light, promoting a more restful and private feel within the room.
  • Climate Control: Thermal-lined, energy-efficient construction reduces energy loss, helping keep rooms cooler in summer and warmer in winter.
  • Noise Reduction: Possesses noise-reduction properties, contributing to a quieter indoor environment.
  • Convenient Operation: Features a detachable pull wand for easy opening and closing, ideal for high-use spaces.
  • Durable Fabric: Crafted from 100% polyester with a solid black finish, providing a classic look suitable for various decor styles.
  • Simple Installation: Grommet top design ensures easy hanging on curtain rods up to 1.5 inches in diameter.
  • Effortless Care: Machine washable cold on gentle cycle, tumble dry low, and cool iron as needed for convenient maintenance.
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Current price is $21.91
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Customer ratings & reviews

4.2 out of 5 stars
stars
1,354 ratings707 reviews
How item rating is calculated
  1. 5 stars67% (909)
  2. 4 stars13% (173)
  3. 3 stars7% (96)
  4. 2 stars4% (54)
  5. 1 star9% (122)

Reviews summary

Pros

  • : Offers great value at this cost.
  • : Fits standard sliding glass and patio doors.
  • : Made of high-quality fabric with a smooth texture.
  • : Described as having deeper, more vibrant hues than anticipated.

Cons

  • : May require ironing or steaming to remove wrinkles.
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Showing 1-3 of 707 reviews

Jun 7, 2026
Reviewer name: anonymous
Top Reviewer
Item details
Size: 100" W x 84" L
Color: Brownstone
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

update to these

If you have the old vertical blinds on your sliding door. Time to get this curtain. The visual appeal. The ease of opening and closing. I should of switched years ago. I installed on a 1" rod and it looks great. Well made, it blocks the heat and the light that pours in from the deck. Just a great product. Do yourself a favor and get rid of those 1980 blinds that never close right. That usually has a couple blinds that are twisted the wrong way and make that annoying sound Everytime the wind blows.

Helpful?1VPCJ5WNEH1S465656756
Apr 26, 2026
Reviewer name: BrooklynAl
Item details
Size: 100" W x 84" L
Color: Brownstone
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Beautiful and efficient heat blocker

Lovely curtains that exceeded my expectations. They serve as an efficient blocker of the sun's heat from my patio door and prevent the inside temperature from being affected. I highly recommend them.

Helpful?1VPCJ5WNEH1S465656756
Jun 30, 2026
Reviewer name: suri
Top Reviewer
Item details
Size: 100" W x 84" L
Color: Brownstone
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

I wanted a blackout curtain for my sliding door in my hallway overlooking a deck. It's perfect! It's pretty and has a rod to close the curtain with, amazing!

Helpful?1VPCJ5WNEH1S465656756