Available 45″ to 144″ wide × 20″ to 110″ tall. Three sliding vinyl panels in a heavy-duty aluminum frame. Built to order in 5 frame colors and 4 vinyl tints for screen porches, sunrooms, and porch enclosures.
Price range: $516.02 through $1,291.76
Every window is custom-made to your opening dimensions.
Email your exact sizes for a written estimate before ordering.
Liftgate delivery to your address
Custom built to your exact opening size
Backed by Porch Conversions warranty
The Triple Horizontal Side Slider is Porch Conversions’ solution for wide porch openings that need three sliding vinyl panels. With widths from 45″ to 144″ and heights from 20″ to 110″, it covers virtually any opening size in a screen porch, sunroom, or porch enclosure.
The heavy-duty extruded aluminum frame is electrostatically painted for lasting color — no peeling, blistering, or chalking. Three panels glide on bottom adjustable rollers with a full-length structurally reinforcing interlock that eliminates gaps between panels. A center latch and weather stripping seal the porch against wind and rain.
Heights 48″ and above include a center horizontal spreader bar for structural reinforcement. Windows larger than 96″ × 86″ ship knock-down (KD) for field assembly — a KD assembly guide is included.
Manufacturer · Made in USA
Porch Conversions has been manufacturing premium porch enclosure systems for decades. Their Triple Horizontal Side Slider series handles the widest openings in the line — from standard bay sections to full-wall porch conversions.
| Available Widths | 45″, 46″–53″, 54″–61″, 62″–69″, 70″–77″, 78″–85″, 86″–93″, 94″–101″, 102″–109″, 110″–117″, 118″–125″, 126″–133″, 134″–144″ |
| Available Heights | 20″, 28″, 36″, 44″, 52″, 60″, 68″, 76″, 84″, 92″, 100″, 110″ |
| Window Type | Triple Horizontal Side Slider |
| Frame Material | Heavy-duty extruded aluminum |
| Finish | Electrostatic paint — chip, peel, and UV resistant |
| Frame Colors | White, Bronze, Clay, Black, Tan |
| Vinyl Colors | Clear, Light Gray, Dark Gray, Bronze |
| Screen | Full exterior screen included |
| Locking | Center latch with weather stripping |
| Hardware | Bottom adjustable rollers; full-length structurally reinforcing interlock |
| Spreader Bar | Center horizontal spreader bar on heights 48″ and above |
| KD Shipping | Windows larger than 96″ x 86″ shipped knock-down for field assembly |
| Warranty | Manufacturer warranty — see warranty document |
| Lead Time | 4–8 weeks (custom made to order) |
| Shipping | Common carrier freight, liftgate delivery nationwide |
| Height | Widths | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 45″ | 46–53″ | 54–61″ | 62–69″ | 70–77″ | 78–85″ | 86–93″ | 94–101″ | 102–109″ | 110–117″ | 118–125″ | 126–133″ | 134–144″ | |
| 20″ | $516.02 | $562.46 | $558.16 | $577.88 | $597.72 | $619.22 | $637.28 | $658.78 | $679.42 | $698.34 | $719.84 | $740.48 | $768.00 |
| 28″ | $562.46 | $606.32 | $602.02 | $622.66 | $644.16 | $663.08 | $683.72 | $705.22 | $725.85 | $744.78 | $765.42 | $786.92 | $813.59 |
| 36″ | $606.32 | $650.18 | $645.88 | $667.38 | $688.02 | $708.66 | $730.16 | $750.80 | $770.81 | $792.72 | $811.66 | $832.51 | $861.74 |
| 44″ | $650.18 | $694.04 | — | $712.96 | $734.46 | $755.10 | $775.74 | $797.24 | $816.17 | $836.81 | $858.31 | $878.95 | $908.19 |
| 52″ | $694.04 | $740.48 | $692.30 | $756.83 | $775.85 | $798.96 | $820.46 | $841.10 | $861.74 | $883.25 | $909.89 | $925.39 | $954.63 |
| 60″ | $740.48 | $784.34 | $736.19 | $803.27 | $824.77 | $845.41 | $866.05 | $887.54 | $908.19 | $928.83 | $950.33 | $970.97 | $1,000.21 |
| 68″ | $784.34 | $828.20 | $826.49 | $847.13 | $870.35 | $891.85 | $910.77 | $933.13 | $954.63 | $975.27 | $996.77 | $1,019.13 | $1,049.23 |
| 76″ | $828.20 | $872.93 | $872.93 | $893.57 | $914.21 | $935.71 | $958.93 | $979.57 | $1,000.21 | $1,021.71 | $1,042.35 | $1,065.57 | $1,094.81 |
| 84″ | $872.93 | $918.51 | $916.79 | $937.43 | $960.65 | $981.74 | $1,002.79 | $1,026.01 | $1,046.65 | $1,067.29 | $1,090.52 | $1,112.01 | $1,141.25 |
| 92″ | $918.51 | $963.23 | $963.23 | $979.57 | $1,004.51 | $1,027.73 | $1,049.18 | $1,069.87 | $1,093.10 | $1,113.74 | $1,136.96 | $1,157.60 | $1,186.84 |
| 100″ | $963.23 | $1,019.13 | $1,007.09 | $1,027.73 | $1,050.99 | $1,071.59 | $1,094.81 | $1,116.37 | $1,138.67 | $1,160.18 | $1,183.40 | $1,204.04 | $1,236.86 |
| 110″ | $1,019.13 | $1,040.63 | $1,063.85 | $1,084.49 | $1,107.71 | $1,129.22 | $1,151.57 | $1,174.79 | $1,195.43 | $1,218.65 | $1,239.29 | $1,266.27 | $1,291.76 |
A Triple Horizontal Side Slider has three sliding vinyl panels in an aluminum frame. The three-panel design handles wider openings than a single or double slider, provides more ventilation options, and eliminates gaps with a full-length structural interlock between panels.
Yes. We take your rough opening measurements and manufacture the window to fit. Standard deduction is 1/4″ from both height and width to guarantee proper fit with room for the mounting fin.
Measure your opening at three points in each direction: top/middle/bottom for width, left/center/right for height. Use the smallest measurement in each direction. There must be at least 7/8″ clearance around the perimeter for the mounting fin.
At 48 inches and taller, a structural center horizontal spreader bar is added to reinforce the frame and prevent flex in the vinyl panels. It does not significantly obstruct the view.
Windows larger than 96″ x 86″ are shipped disassembled (knock-down) for safe freight transport and assembled on-site using the included KD assembly guide. The process is straightforward and does not require special tools.
No. These windows are custom manufactured to your specifications and cannot be returned or cancelled once production begins. A written estimate with all specifications is sent for approval before production starts — review it carefully before confirming.
The frame color is the aluminum surround. The vinyl color is the tint of the sliding panels. These can be mixed and matched freely, e.g., a White frame with Light Gray vinyl.
Porch Conversions prices the Triple Slider in width bands. For example, any window between 46″ and 53″ wide is priced the same. The window is still manufactured to the customer’s exact measurement within that band.
That variation does not currently exist as a product in WooCommerce. It should be added — based on adjacent width pricing, the expected price is approximately $690–$695. All other width/height combinations are available.
Our team will help you measure, spec, and price your project — no obligation.
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