500 Series

The MHD Clarion Series apartment windows combine outstanding craftsmanship with a traditional look and feel outstanding craftsmanship with a traditional look and feel. Strong and energy efficient, the Clarion Series is suitable for garden style or mid-rise apartments, multifamily homes, as well as historic restorations.
Additional Styles:
Meridian Apartment Windows
Features
- 3‑¼” Mainframe Depth
- Fully Welded Frame and Sash
- Strong Multi-Cavity Construction
- Full Integral Interlock with Double Weather-Stripping
- Heatseal® Warm Edge Glass Spacer System
- Extra-Strength Glase with ¾ I.G.U.
- Heavy-Duty Fully Integrated Lift Rail
- Slim Profile Sash Lock with Tamper-Proof Cam
- Fiberglass Mesh Half Screen
Beveled Colonial Exterior

Compression Seal at Sloped Sill

Power Lift Balance System

Interlock Bulb Gasket Seal

Mortised Sill Dam Wall

Spring Load Vent Latches

Features
- 3‑¼” Mainframe Depth
- Fully Welded Frame and Sash
- Strong Multi-Cavity Construction
- Full Integral Interlock with Double Weather-Stripping
- Heatseal® Warm Edge Glass Spacer System
- Extra-Strength Glase with ¾ I.G.U.
- Heavy-Duty Full Integrated Lift Rail
- Slim Profile Sash Lock with Tamper-Proof Cam
- Fiberglass Mesh Half Screen
Slim Profile Sash Locks

Factory Applied Bumpers

Interlock Bulb Gasket Seal

Tandem Brass Rollers

Double Hung U‑Value | Slider U‑Value | Picture U‑Value | Energy Star Minimum Northern Climate Zone |
|
Dual Glazed | ||||
Energy Saving Package | 0.28 | 0.28 | 0.27 | 0.30 |
Deluxe Package | 0.26 | 0.27 | 0.26 | 0.30 |
Triple Glazed | ||||
Energy Saving Package | 0.22 | 0.22 | 0.20 | 0.30 |
Deluxe Package | 0.20 | 0.22 | 0.20 | 0.30 |
Double Hung (38x63) | Slider (63x44) | Picture (48x48) | Industry Minimum | |
Dual Glazed | ||||
Design Pressure (DP) | R50 | R35 | R75 | R15 |
Air Infiltration (CAM/FT2) | 0.05 | 0.01 | < 0.01 | 0.30 |
Water Penetration (MPH) | 56 | 59 | 66 | 33 |
Structural Integrity (MPH) | 171 | 143 | 210 | 94 |
The lower the I‑value, the greater a window’s resistance to heat flow and the better its insulating value. Please check the National Fenestration Rating Council (NFRC) at www.NFRC.org to compare energy performance values.
Design Pressure (DP) — Specifies a window’s resistance to wind and other dynamic pressures. The lighter the DP rating, the stronger the window.
Air Infiltration (CAM/FT2) — The amount of air in cubic feet per minute that may come through the window at speeds of 25MPH.
Water Penetration (mph) — Specifies wind load pressure in mph a window can withstand without leaking, under rain equivalent to 8″ per hour.
Structural Integrity (mph) — Wind load in mph the window can withstand before breaking.
All result numbers are based on tested window sample by NFRC and AAMA testing window guidelines. Use for comparison purposes only. Actual values may vary depending on installation, size of the window, and other conditions. All illustrations, photographs, and specifications are based on the latest product information available at the time of publishing. Some windows shown with optional features. See the actual product for complete accuracy. The manufacturer reserves the right to alter or discontinues any model or specification without notice.