68/155 Brass Upright Fire Sprinkler Heads — Pack of 5 Why you need these sprinkler heads Rapid response to fires: the thermal red glass bulb activates quickly to start water dispersion as soon as temperatures rise, helping limit fire growth and property damage. Targeted, efficient suppression: the upright, parabolic spray pattern directs 80–100% of water downward for maximum floor coverage while a controlled portion rises to cool the ceiling, improving overall suppression performance. Durable, lowmaintenance hardware: solid brass construction resists corrosion and wear, extending service life and reducing replacement frequency. Key benefits and problem solving Faster activation reduces fire spread and gives occupants and first responders more time to respond. Efficient water distribution reduces water waste while maximizing coverage where it matters most. Standard thread compatibility simplifies retrofits and replacements, lowering installation time and labor costs. Pack of 5 gives you spares for routine maintenance or enough units for small installations. Features and specifications Model: 68/155 (as specified) Type: Upright sprinkler, parabolic spray pattern Operating pressure: 1.2 MPa Material: Brass body with thermal red glass bulb Thread: Standard 1/2' NPT for broad system compatibility Weight: 48 g per unit Quantity: 5 pieces per package Practical applications Office and retail ceilings: Reliable upright pattern covers open floor areas and corridors while cooling ceiling surfaces. Warehouses and storage areas: Efficient downward coverage protects shelving and stored goods; brass construction suits industrial environments. Apartment and common areas in multifamily buildings: Standard 1/2' NPT thread makes replacement simple in existing systems. Installation and maintenance notes Designed for straightforward installation into systems using 1/2' NPT fittings; ensure proper orientation for upright operation. Keep spare units on hand for scheduled inspections and quick replacements to maintain system readiness. Follow local fire codes and a qualified installer's guidance for placement, spacing, and system testing. What makes this product stand out Combines fastacting thermal glass activation with a carefully engineered parabolic spray to balance floor coverage and ceiling cooling. Brass construction plus a standard thread size reduce compatibility issues and longterm maintenance needs. Supplied as a convenient pack of five for economical replacement or initial fitout.