Guardian 18 In. x 52 In. Single Strength Window Glass Alpha ProTech Allows door to be opened

Allows door to be opened slightly for viewing

Automatic unlatching feature prevents lock-out

R-Value of 4

and rises when the door is opened to signal a delivery was made

good quality caulking gun

Guardian 18 In. x 52 In. Single Strength Window Glass Alpha ProTech Allows door to be openedHigh quality float glass manufactured by Guardian Industries. Float glass provides easy cutting and superior optical characteristics over sheet glass (manufactured by the drawn method). Various sizes in single strength (SSB), 3 32" thick and or double strength (DSB), 1 8" thick. 5% volume discount available on orders of 10 boxes or more, assorted sizes.