Note: The crossbars are held in place by the pressure of the anchors
Damper plate closes against fiberglass gasket (white) for a tight seal (screen removed for demo)
Ships in either a single box or the compact
Just silicone them in
Universal Damper Kit - 304 Stainless Steel
Water Guard (Masonry Water Repellent) Size:5 Gallon Note: The crossbars are heldWater Guard (Masonry Water Repellent) can be applied to a wide variety of masonry surfaces such as: brick, architectural concrete, concrete block, split face block, pavers, stucco, porous and exposed aggregate concrete. Water Guard when applied correctly reduces cracking, spalling, freeze & thaw damage, chemical degradation, biological growth and efflorescence thereby lengthening substrate life. Low VOC emissions on curing; EPA compliant, UV stable