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Master Lock 25.5-in to 43.5-in Adjustable Steel Sliding Patio Door Security Bar

Name: Master Lock 25.5-in to 43.5-in Adjustable Steel Sliding Patio Door Security Bar
Brand: Master Lock
SKU: 5013274189
Price: 32.48 USD
Availability: InStock
Rating: 4.3 (169 reviews)

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4.3

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The Master Lock 270D: Adjustable Hinged and Sliding Door Security Bar makes it easier than ever to feel safe in any location. With twice the strength of our standard door bar, this compact door jammer is adjustable and protects hinged, sliding, patio and hotel doors. Perfect for traveling and fit in your luggage or store at home, this door stopper/security bar has a padded rubber foot to hold against pressure and prevent damage to floors. The quick-release design makes it easy and fast to install and adjusts to the required length of each door, from 25-1/2 in. to 43-1/2 in. The Limited Lifetime Warranty provides peace of mind from a brand you can trust.

Door security bar resists forced entry into most standard doors
Door jammer is twice as strong as our standard door bar, with 20-guage steel construction
Master Lock 270D is 2x stronger than the 265D based on angled compression testing at standard 36 in doorknob height
Security bar for sliding glass door that can also secure hinged, patio and other doors
Door stopper adjusts from 25-1/2 in to 43-1/2 in for use on most hinged and sliding doors
Rugged, easy-to-install protection for small apartments, dorm rooms and other tight spaces
Padded foot provides sure grip on most floor surfaces and protects against damage
Innovative folding design for compact storage and portability-perfect for travel

General
Color/Finish Family	White	Series Name	Security Door Bar
Manufacturer Color/Finish	White steel	Material	Steel

Dimensions
Depth (Inches)	0	Minimum Door Thickness (Inches)	0
Height (Inches)	42	Weight (lbs.)	2.5
Maximum Door Thickness (Inches)	0	Minimum Length (Inches)	25.5
Maximum Length (Inches)	43.5

Features
Adjustable	Yes	Commercial/Residential	Residential

Certifications
CA Residents: Prop 65 Warning(s)	No

Warranty
Warranty	Limited lifetime

Miscellaneous
UNSPSC	30171500

Check out the Best Selling Sliding Patio Door Security Bars on Lowes.com

Review

4.3 out of 5

169 Reviews

76% Recommend this product

Ratings may include incentivized customer reviews.

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+ 5

What Customers Are Saying

Customers overwhelmingly praise this security bar for its effectiveness in preventing forced entry and delivering peace of mind. Most highlight how it immobilizes doors under pressure and adjusts easily across different door widths and floor types including carpet, tile, and wood. Many appreciate the sturdy construction, padded foot, and portability for rentals or travel. However, some report durability issues with the folding hinge and internal pins breaking or falling out during normal use. Despite these concerns, most customers consider it a reliable, affordable security solution that successfully protects homes and provides emotional reassurance.

Customer review summary generated by AI, including incentivized reviews.

169 Customer Reviews

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Great product

Would Recommend

Just what we needed.

Jo JoJuly 20, 2026
Verified Purchaser

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Home security

Would Recommend

I bought this product a few weeks ago, and I'm very pleased with it. It gives me peace of mind. Knowing I'm safe in my home. First time ever living in an apartment and just 9 maintenance has a key to your house. Makes you feel so unsafe. But with this product, I feel very at ease.

RoseBareJuly 16, 2026
Verified Purchaser

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Utmost customer service

Would Recommend

The team member who showed me where, to find the exact product I was looking for made my shopping at Lowes a very expectational, experience. She was caring polite and very courteous, knowledgeable.

NoneJune 25, 2026
Verified Purchaser

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Security

Would Recommend

Easy to set up and use.

KateJune 21, 2026
Verified Purchaser

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Lowe's is a great place to shop.

Would Recommend

Great for security

NookeyJune 12, 2026
Verified Purchaser

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5 Questions

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COMPARE PRODUCTS

		Name	Current Item Master Lock25.5-in to 43.5-in Adjustable Steel Sliding Patio Door Security Bar
		Ratings	169
		Height (Inches)	42
		Warranty	Limited lifetime
		UNSPSC	30171500
Prime-Line24-in to 38-in Adjustable Aluminum Sliding Patio Door Security Bar	Brinks25-in to 43-in Adjustable Steel Sliding Patio Door Security Bar	KHKFY Adjustable Sliding Door Security Bar 17 to 50 Inch Heavy Duty Steel Security Bar with Rubber Tips for Sliding Glass Doors Windows Home	Numhew28 to 52 in Adjustable Black Stainless Steel Door Security Bar	KHKFY Adjustable Sliding Door Security Bar 17 to 50 Inch Heavy Duty Window Safety Bar with Rubber Tips for Home Apartment Patio Interior	Numhew17 to 50 in Adjustable White Sliding Door Security Bar	Numhew17-50in Adjustable 1-Bar Black Sliding Door Security Bar	Numhew17.7 to 50.5 in Adjustable 1 in Diameter White Sliding Door Security Bar	RELIABILT30-in to 43.5-in Adjustable Steel Sliding Patio Door Security Bar
	9							7
1	29.2	17.44	17.36	17.44	17.44	17.09	3	1.5
1-year limited	None	30-day limited	30-day	30-day limited	30-day	30-day	30-day	Limited lifetime
30171500	30171500	30171500	30171500	30171500	30171500	30171500	30171500	30171500