Model # LNB-P

Internet #204515011

Cardinal Gates 30.5 in. H x 24 in. W x 1 in. D Lock-n-Block Sliding Door Gate

Discontinued Cardinal Gates

30.5 in. H x 24 in. W x 1 in. D Lock-n-Block Sliding Door Gate

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Product Overview

Finally, a pet safety gate specifically designed for sliding glass doors. The Cardinal Gates Lock-n-Block, Model LNB, is the only sliding glass door safety gate available on the market. No more worries about the dog bolting through the screen door. The Lock-n-Block gate adds a layer of protection even while using the screen door. Ideal for pets, the Lock-n-Block Sliding Door Gate also provides a much-needed visual to help prevent dogs from running into the glass or screen door. Enjoy the fresh air. Use this gate and screen door simultaneously. The Lock-n-Block nests into the functional track of the sliding glass door. The screen door track is untouched, so the screen door can be open or closed with the gate in place. This unique sliding door gate features durable steel construction and work only on sliding glass doors that measure 1 in. or 1.5 in. thick.

  • Only safety gate for sliding glass doors
  • Can use screen door with gate in place
  • No tools required to install
  • Steel construction with powder-coated finish
  • Gate dimensions: height 30-1/2 in., bar spacing 1-7/8 in. fits all standard sliding doors 1 in. and 1-1/2 in. thick



Product Depth (in.)
Product Height (in.)
Product Width (in.)


Pet Size
Any Size
Pet Supplies Product Type
Product Weight (lb.)

Warranty / Certifications

Manufacturer Warranty
Cardinal Gates warranties our products to be free from manufacturing defects for a period of one (1) year. This warranty applies to products used in non-commercial settings. We will, at our option, either repair or replace any parts necessary to correct defects in material or workmanship during the warranty period.

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Customer Questions & Answers

What is the smallest doorway this will fit?

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