Speedset 3/8" x 3" x 16" Expansion Foam for 3" and 4" Glass Block

Installing 3-inch or 4-inch thick glass block panels has never been easier, thanks to the Speedset glass block assembly components. Want to add a touch of beauty to your home, but you're unsure if you can manage the task? The Speedset silicone or mortar set system makes assembly and installation easy! The expansion foam is used to fill the gap between both sides of the panel, and the gap between the top row of the panel and the header. Simply cut the foam to fit inside the curved gap of the 3-inch or 4-i...