PHENOL (LR 4x20 U 15x25)

Description

The LR 4×20 U 15×25 – Phenol perforated sheet metal Phenol an elongated grid pattern with 4×20 mm oblong openings arranged in a perfectly orthogonal alignment with a pitch of 15 mm in the short direction and 25 mm in the long direction. In this perforated grid geometry, the open area is approximately 18%, which is suitable when you want to combine useful airflow, adjusted light input, and calm visual reading. Unlike a perforated grid with a staggered "Z" pattern, the linear grid produces a "U" pattern that remains highly legible: the shadows are arranged in regular bands, with a more pronounced orthogonal grid effect depending on the orientation. The 4×20 mm oblong perforated hole creates an elegant, directional signature. When installed horizontally, it visually stretches the facades and lightens the building's volumes; when installed vertically, it accentuates the perception of the building's height. Phenol perforated sheet metal Phenol a 15×25 mm U-shaped orthogonal grid center distance and a 4×20 mm opening, the material bridges reach approximately 11 mm in the short direction (15–4) and 5 mm in the long direction (25–20). The orthogonal grid pattern gives it a slightly more directional behavior than an offset mesh; however, the 5 mm longitudinal ligature requires precision: • for 1.5 mm steel, choose unframed formats measuring 1.3 m² depending on the exposure; • remember to orient the folds perpendicular to the long side of the oblongs to maximize the strength of the perforated sheet metal; Perforated sheet metal with an 18% open area provides regular micro-ventilation and moderate light transmission, while significantly limiting direct views from the outside. The 4×20 mm slits reduce the introduction of objects and finger grip, which is useful in accessible areas. In technical false ceilings, the combination of perforated sheet metal with an acoustic veil and an absorbent material transforms the perforated grid into a high-performance technical facing. The 1.5 mm thick galvanized steel perforated sheet metal sells for between €52 and €90/m² for around 100 m² of metal.

Uses

The LR 4x20 U 15x25 - Phenol perforated sheet Phenol mainly Phenol for filling guardrails, partition grilles, ventilation grille covers, and radiator covers. Its aligned oblong perforations limit visibility in a specific direction, producing a progressive occlusion effect depending on the angle of observation. This optical behavior makes the sheet an excellent material for preserving the privacy of balconies, terraces, and technical machinery while ensuring sufficient airflow without revealing the mechanical construction. The low transparency of 18% gives LR 4x20 U 15x25 sheet metal a solid and protective presence. The high proportion of metal gives it high mechanical strength, suitable for environments subject to vandalism, urban impacts, and repeated external stresses. This robustness makes it a preferred material for urban fencing, facade bases, and enclosures for technical rooms and OM rooms. The regularity of the pattern and the precision of the alignment ensure a clear visual reading, without optical vibration or graphic disorder. This makes it easy to integrate into an architectural project. Phenol perforated sheet metal Phenol also an ideal functional cladding material for ventilation covers, duct facings, technical fencing, and equipment protection. Its linear pattern evokes industrial precision while blending easily into sober, rhythmic architectural compositions. Urban architects find it a rigorous and directional material, capable of structuring facades through the controlled repetition of the pattern. Metalworkers see it as a solid perforated sheet that is easy to bend and fix, perfectly suited to modular systems. Interior designers recognize it as a filtering and graphic grid surface that delimits spaces without closing them off.

Team advice

For an optimized performance/price ratio, we recommend PHENOL sheet metal PHENOL Galvanized steel, thickness 1.5 mm