2x2 ceiling grid
3. Gypsum Gypsum is another common ingredient in mineral fiber ceiling tiles. It is a naturally occurring mineral that can improve the fire resistance of the tiles. Gypsum boards are often used as a backing for mineral fiber tiles, contributing to their overall stability and performance.
what are mineral fiber ceiling tiles made of

Waterproof exterior access panels are specially designed openings installed in walls, ceilings, or floors that provide access to plumbing, electrical, HVAC systems, or crawl spaces. Their waterproof nature ensures that moisture does not penetrate the building envelope, thus preventing potential damage to the interior structure. Typically constructed from durable materials such as stainless steel, aluminum, or PVC, these panels are designed to withstand harsh environmental factors.