| Screen Mesh | Fiberglass, aluminum, polyester, stainless steel | Common insect mesh: 18 × 16 or 20 × 20 openings per inch; wire diameter commonly about 0.20–0.30 mm | Coating adhesion, tear resistance, UV stability, dimensional consistency and clean cut edges | Fiberglass for general residential use; aluminum or stainless steel for coastal and high-abrasion environments; polyester for impact resistance | Confirm opening size, roll width, mesh count, wire diameter, color, tensile performance and resistance to corrosion or ultraviolet exposure |
| Screen Spline | EPDM rubber, flexible PVC, thermoplastic elastomer | Common diameters approximately 3.0–5.5 mm; size must match the frame groove and mesh thickness | Elastic recovery, resistance to cracking, compression set, temperature stability and resistance to cleaning chemicals | EPDM is suitable for outdoor use and temperature variation; flexible PVC is economical for standard indoor or sheltered applications | Measure the actual groove width and depth; test retention after installation; check hardness, color stability and compatibility with the mesh |
| Door Frame Profile | Extruded aluminum, galvanized steel, reinforced PVC | Typical profile wall thickness about 0.8–1.5 mm for aluminum; common frame depths approximately 10–35 mm | Profile straightness, corner strength, coating thickness, resistance to denting and protection against galvanic corrosion | Powder-coated aluminum for most markets; stainless or treated steel where heavy use, salt air or vandal resistance is important | Verify alloy or steel grade, profile tolerance, surface finish, corner compatibility, cut length and packaging protection |
| Roller Assembly | Acetal or nylon wheel, stainless steel or zinc-plated axle, aluminum or reinforced polymer housing | Wheel diameters commonly 19–32 mm; adjustable spring-loaded housings are widely used for sliding screen doors | Bearing or bushing quality, wheel hardness, axle alignment, spring fatigue resistance and smooth rolling under load | Stainless hardware for humid or coastal regions; polymer wheels reduce noise and are suitable for standard residential applications | Match wheel diameter, housing shape, adjustment range, door weight capacity and track profile; conduct cycle testing before approval |
| Door Track | Anodized aluminum, stainless steel, galvanized steel | Track width and height depend on the roller; common residential replacement tracks are about 10–25 mm wide | Wear resistance, straightness, drainage design, surface hardness and resistance to dirt accumulation | Anodized aluminum for lightweight systems; stainless steel for high moisture, salt exposure or heavy traffic | Check rail alignment, mounting method, cut-length tolerance, load rating, corrosion protection and compatibility with existing rollers |
| Corner Keys | Glass-filled nylon, reinforced polymer, die-cast aluminum | Designed for specific frame channels; common insert depths are approximately 8–20 mm | Impact resistance, dimensional stability, screw retention and resistance to heat-related deformation | Reinforced polymer for general use; metal keys for heavy frames, high traffic and higher mechanical loads | Confirm frame channel dimensions, corner angle, insert depth, fastener position and resistance to assembly cracking |
| Handle Set | Aluminum, stainless steel, zinc alloy, reinforced polymer | Common fixing-center distances approximately 50–100 mm; pull depth and backplate size vary by door profile | Fastener strength, corrosion resistance, grip rigidity, coating adhesion and resistance to repeated pulling | Stainless steel or anodized aluminum for humid and coastal markets; polymer handles for lightweight doors | Check fixing centers, screw thread, mounting clearance, hand orientation, surface finish and compatibility with frame thickness |
| Latch and Lock | Stainless steel, zinc alloy, engineering polymer | Common latch bodies are approximately 40–90 mm long; hole spacing and strike position vary by system | Latch-cycle performance, spring return, corrosion resistance, secure engagement and resistance to misalignment | Stainless components for wet, coastal or high-use environments; polymer components for standard low-load applications | Verify door handing, latch projection, strike alignment, fixing dimensions, key or thumb-turn operation and cycle-test results |
| Brush Seal and Weatherstrip | Polypropylene or nylon pile, EPDM, flexible PVC | Pile heights commonly 4–12 mm; adhesive or carrier-based profiles are selected according to the gap and channel | Pile recovery, UV resistance, low-temperature flexibility, compression recovery and adhesion strength | Dense brush seals for dust and insects; EPDM or flexible PVC for moisture, wind and temperature variation | Measure the actual clearance, confirm seal height and density, test sliding resistance and check performance after heat and humidity exposure |
| Fasteners and Accessories | Stainless steel, galvanized steel, plated steel, nylon | Common screw sizes are approximately 3.5–5.0 mm in diameter; length depends on profile and mounting substrate | Thread strength, corrosion protection, head quality, installation torque and resistance to loosening | Stainless steel for outdoor, humid and coastal locations; coated steel for sheltered, cost-sensitive applications | Confirm metric or imperial thread, screw length, coating or steel grade, torque requirements, corrosion test evidence and packing method |